cover of episode Cat Translation Guide

Cat Translation Guide

2024/11/20
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Twenty Thousand Hertz

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Kendra Baker
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Sarah Brown
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Sarah Brown: 我研究猫的行为已有30多年,出版了《猫的隐秘语言》一书。猫的祖先是独居动物,不像狗那样继承了狼的社会信号,因此猫的行为更微妙,更难解读。猫的主要沟通方式是气味,但家猫为了与其他猫和人相处,不得不发展新的沟通方式,例如喵喵叫。野生猫通常很安静,因为它们既是捕食者,也是猎物,需要避免引起注意。猫很少对其他猫喵喵叫,主要在求偶、打架和母子交流时发出叫声。猫对人的喵喵叫声,源于母猫与小猫之间的交流。猫学会了喵喵叫来吸引人的注意,因为人们通常忽略它们的其它沟通方式(气味、尾巴信号)。我观察到一只野猫学会了对我喵喵叫来获得食物。家猫的喵喵叫声的音调(约600赫兹)与婴儿的哭声相似,这可能是家猫喵喵叫声进化的结果。非洲野猫的喵喵叫声音调远低于家猫,这说明家猫的喵喵叫声是为了吸引人类注意而进化出来的。人们对猫和狗说话时会提高音调,这可能是为了模仿猫的叫声或引起它们的注意。猫能够区分主人对它们的说话和对其他人的说话,但我们很难确定它们理解多少。猫能认出主人的声音和自己的名字,但它们的回应比狗更微妙,所以我们常常误以为它们在忽视我们。人们很难区分猫在不同情境下的喵喵叫声,但猫主人更容易识别自己猫的叫声。猫的喵喵叫声的音调变化可以反映其情绪:积极的叫声音调会升高,而痛苦的叫声音调会降低。猫的耳朵位置可以反映其情绪:竖起的耳朵表示警觉和快乐,向后旋转的耳朵表示愤怒,平贴的耳朵表示恐惧。猫在恐惧时会使自己看起来更小,而在愤怒时会使自己看起来更大。猫的咆哮、怒吼和嘶嘶声表示“走开,别惹我”。猫竖起的尾巴表示友好的问候。只有狮子和家猫有竖起尾巴的问候信号,这可能与它们的社会结构有关。猫的颤音或唧唧叫声源于母猫对小猫的叫声,表示友好的问候。猫蹭你的脸或腿是一种问候行为,也包含气味标记。让猫主动发起互动,互动时间会更长。猫喜欢被抚摸下巴、头部和耳朵,缓慢眨眼表示舒适。猫的缓慢眨眼就像人类的微笑。猫的呼噜声表示舒适和满足。猫的呼噜声是一种自我安慰的方式,表示一切安好。猫的呼噜声由大脑中的神经振荡器控制。会咆哮的猫不会呼噜,反之亦然,这与它们的声带结构有关。猫揉捏的动作源于幼猫时期刺激母猫产奶的行为,成年猫揉捏表示舒适和气味标记。猫在感到压力或疼痛时也会呼噜,这可能是自我安慰的一种方式。猫的呼噜声也可能向潜在的敌人发出信号,表示自己并非威胁。猫的吱吱叫声通常在观察无法捕捉到的猎物时发出,其含义尚不明确。猫的吱吱叫声可能是因为沮丧,或试图吸引猎物的注意,或模仿猎物的叫声。老年猫可能会因为认知功能障碍而发出更多叫声。猫尽力在和我们沟通,只是我们太专注于人类世界而没有注意到。我们应该尝试从猫的角度来理解它们,因为它们的世界以气味为主。通过学习猫的沟通方式,可以加强人与猫之间的关系。 Kendra Baker: 我在大学时捡到了一只猫,并收养了她,取名Billi。Billi性格外向,喜欢与人互动,这吸引了我。Billi非常善于表达,尤其是在要吃饭的时候。我们应该改善宠物的生活质量,给予它们更多控制权。我开始训练Billi使用语音按钮,这是一种增强人与宠物之间沟通的方式。教宠物使用语音按钮的原理与教婴儿说话一样,需要反复示范。我一开始先教Billi使用“食物”按钮,因为食物是最好的激励方式。Billi花了三个半星期学会了有意地按按钮。Billi最常按的按钮是“宠物”和“玩耍”。语音按钮帮助Billi更有效地表达自己的需求。Billi使用语音按钮表达了对不在家的爸爸的思念。Billi每天会按很多次按钮,并且减少了喵喵叫。Billi的语音按钮包括一些抽象的概念,例如“爱”、“最喜欢的”和“生气”。我通过示范教Billi使用“生气”按钮,例如当她想要食物但不是饭点时。Billi很快学会了使用“生气”按钮,并能表达自己的不满。Billi的视频在网上走红。Billi被称为“Her MADjesty”,她的故事激励了很多人。Billi的故事帮助人们更好地理解和与猫相处。科学家正在对使用语音按钮的宠物进行研究。新的语音按钮可以将数据发送到应用程序,方便科学家收集数据。语音按钮可以丰富宠物的生活,并增强人与宠物之间的关系。与Billi相处让我成为一个更富有同情心的人。Billi生来患有多囊肾病。Billi12岁时肾功能衰竭,最终不得不安乐死。我使用“疼痛”和“药物”按钮帮助Billi理解并接受治疗。通过使用语音按钮,Billi能够主动服药。Billi在生命最后阶段使用语音按钮越来越少。我最终决定让Billi安乐死,让她免受痛苦。学习猫的沟通方式可以增进人与猫之间的关系。Billi让我成为一个更富有同情心和同理心的人。

Deep Dive

Chapters
This chapter explores the complexities of cat communication, highlighting the subtle nature of their behavior compared to dogs. It delves into the evolution of the meow, its frequency, and how cats have adapted their communication to humans.
  • Cats' communication is more subtle than dogs', relying heavily on scent.
  • The meow has evolved to a frequency similar to human babies' cries, making it attention-grabbing.
  • Cats can recognize their owner's voice and their names.

Shownotes Transcript

Translations:
中文

You're listening to 20,000 Hertz. I'm Dallas Taylor. As humans, we love our cats. Nearly 43 million households in the U.S. alone have a pet cat. And there are about 350 million pet cats around the world. But just because we love them, that doesn't always mean that we understand them. Cats can be very vocal creatures. Meow. Meow. Meow. Meow.

But the exact meaning and intention behind these sounds can often be hard to read. The thing is, as much as we love our cats, they don't always seem to reciprocate. Certainly not the way dogs do. That's 20,000 Hertz producer Layla Battison. They've got a bit of a reputation for being aloof, standoffish, or at least fiercely independent.

They're not innately sociable. That's Dr Sarah Brown. Some of them are better at it than others, I think to say the least. Sarah has been researching cat behaviour for over 30 years and is the author of a book called The Hidden Language of Cats. She says the key to understanding your cat is to walk a mile in their paws. Cats come from a solitary ancestor, unlike dogs which had a preformed set of social signals inherited from their wolf ancestors.

With cats, their behavior is a little bit more subtle and a bit harder to read sometimes. In fact, us humans are totally oblivious to most of the communication going on between them. Cats' go-to way of communicating is by a scent. They would leave a scent for another wild cat to pick up later and keep their distance from each other. So to come from that to living amongst other cats and amongst people, the domestic cat has had to develop

new ways of communicating. In the natural world, cats tend to be fairly quiet. It makes sense because in the wild, you don't want to make a lot of noise and bring attention to yourself. Cats are in the uniquely tricky situation of being predators, but also still small enough to be prey to bigger hunters. If you're a small feline, you want to be able to catch things and not bring attention to your prey so that you miss them. And you don't want to be caught by anything else.

So predator and prey species tend to be quiet when they're in the wild. Most of the time, cats make different noises with each other than they do with us. Cats communicating with other cats very rarely meow. Cats mostly reserve their vocalizations for three types of occasions, and that is one, finding a mate, two, fighting, and three, mother-kitten communications. Meow!

Those first two are very noisy and it's that last set of noises, the mother kitten sounds, that people most enjoy. And these seem to be the vocalizations that cats have carried through into interacting with people. So the meows, the trills, and the chirrups, the little gentle sounds.

Over the millennia, cats have had to hone in on the kind of communication that we're used to, which is sound. And this is probably because we don't really understand or notice half the other things they do to us. We don't notice their scent deposits. We don't always notice their tail signals. They know that just as when they meow to their mother when they're kittens, that when they meow at us... Meow!

It gets our attention. Sarah has seen feral cats figure this out in real time. One of the cats in the colony that I studied, he would come and sit near me every night when I fed the colony and he was probably the tamest of all of them, but he would always keep his distance and then one day he just meowed at me. He'd worked out that that was a way of communicating with me and I just think that's just amazing that they worked that out.

Since cats were first domesticated, the meow itself has evolved. And today, it's strikingly close to a sound that we have evolved to care about. The average pitch of an adult domestic cat's meow is around 600 hertz. And interestingly enough, the cries of a healthy human baby average out at about 400 to 600 hertz as well.

Which might not sound very astonishing, except for that if you record the meows of an African wildcat, which is the ancestor of the domestic cat, they come in at around 255 hertz. So much lower pitch than the domestic cat. And so pitched about the same level, both cat meows and baby cries seem to be particularly hard to ignore.

This vocal manipulation works both ways. People change their tone of voice when they speak to a cat or a dog to a much higher pitch, similar to the way we speak to babies. We speak more slowly and we speak like this, you know, how are you? But why we use it to speak to cats and dogs is a bit of a mystery. Do we think that there are babies or

Or are we trying to emulate their higher-pitched meows so that they recognize that we're talking to them? Whatever the reason, cats do recognize this baby talk. One study showed that when listening to their owners speak, they could tell the difference between speech directed deliberately at them... Come here, kitty. Ready for dinner? ...and normal speech that people use with other adults. But even if a cat knows you're talking to it, how much does it actually understand?

Quite often they appear not to understand a single word we say, right? But they have started to do more studies on what exactly cats can understand. One of the things they found out is that they can recognize the voice of their owner from other people's voices. And they also recognize their names. They can pick out their name from a series of other words that sound similar.

But compared to dogs, it can be hard to confirm when a cat really understands something. Part of the reason is that they don't respond like dogs, where they come running up as soon as you say their name. They might twitch their ears a bit more when you say their name, or they might turn their head, but they have a very more subtle way of responding to anything we say. And so we do often think they're ignoring us, but I think they hear and understand a lot more than they let on. ♪

We can hardly blame cats for not understanding us, though, when we fare little better when trying to decode their meows. If you record a bunch of meows in different contexts, so say you record a greeting meow on a meow where a cat's in a cat carrier, so it's sad. Meow!

If you play these meows back to people without any visual context, they find it really hard to identify the context. But the rate of success does increase when owners are listening to the meows of their own cat. This sort of shows that people and their cats develop gradually a way of communicating so the cat gradually realizes what works on their person and the person gradually recognizes a particular meow. Meow!

When trying to decode a cat's meow, there are some general patterns that you can listen for. So a positive meow, like in a greeting or if it wants to be fed, the pitch will rise towards the end of the meow. And a distressed meow, like travelling in a cat carrier or going to the vet, will fall in pitch. Beyond this, the key to understanding cats is in their body language. You can start with the ears.

So ears are very mobile. They move from one position to another so quickly that you don't know if the cat's just listening to something or whether its mood is changing very quickly. But basically, if they're upright, that's usually alert and happy and quite content.

If the ears are swivelled backwards, that is usually an aggressive type stance. That usually means they're feeling quite angry. And if the ears are very flat, sort of proper aeroplane flat ears, that's usually a fear type position. They're often crouched with their ears really flat to their head. Making yourself smaller when you're frightened is a natural response of lots of wild animals.

using your body language to say, please don't notice me. And conversely... When they're feeling aggressive, their fur literally fluffs up and they stand sideways and do that sort of arched position with their tail fluffed up to make themselves appear as big as possible to their opponent. Fear and aggression are often accompanied by some of cats' most noisy, unpleasant sounds, like growls, yowls,

and hisses. These are all basically ways of saying, "Back off, don't mess with me." But all being well, your neighborhood cat won't consider you their enemy, and a chance interaction is likely to begin with a raised tail.

The raised tail is a greeting signal and it means basically I come in peace. In this, our pet cats have something in common with a much more formidable feline. Out of all the cat species in all the world, there's only two that have this tail up signal and that is the lion and the domestic cat. And interestingly, those are the only two species that have

a social structure. Whereas cougars, leopards and cheetahs all live in relative isolation from one another, lions and wild domestic cats tend to live in groups. They think that the tail-up signal has evolved separately in these two species, having to have signals that other cats could see and understand. It's like, well, what can we use to make a signal to each other? And, oh, I'll use my tail! LAUGHTER

In domestic cats, that raised tail can often be accompanied by a sound called a trill or a chirrup. So they originate from the sound that a mother cat uses to her kittens when she returns to the nest in the wild. She makes this beautiful chirrup sound.

Actually, they found out that kittens can actually recognize their own mother's chirrup from other mothers' chirrups. So they know from a very young age that this is their mum making that noise. Adult cats use this same sound to us in greeting, really. So you might walk into a room and your cat goes, and often they weave it in with meows as well. So there might be a sort of a meow trill going on, which is a happy greeting sound. Meow, meow.

What comes next is basically the cat version of a handshake, when it rubs its face against your hand or leg.

Yeah, it's a greeting behaviour but it also has an element of scent in it. They have glands all around their faces so that when they rub on something they're depositing their scent on either an object or another cat or a person. The rub becomes an invitation for more body contact. But the trick is to let the cat take the lead. There's been studies that show that interactions that are started by the cat last longer than interactions started by a person.

The best way is to basically hold out your hand so that they can come and sniff you and work out your smells and what you're about. If you've made it this far, you should have the green light for more pets. They love to be petted around the chin and the head and the ears. If the cat is liking the attention, you may be able to tell through its eyes. Eye contact is really interesting in cats because they're not...

not programmed to look at each other a lot. And so they don't like staring. That might be perceived as hostile. So cats tend to glance a bit more at each other, but there's this wonderful behavior that cats do to people and people can do that to cats, which is called the slow blink. And so if you find yourself gazing at a cat for maybe a little bit long, if you try blinking really slowly or kind of half blinking or squinting at them, they'll quite often do this slow blink back.

which is an indication that they're feeling comfortable in your presence. I think it's a lovely thing. It's like a little smile with your eyes. If everything has gone well up to this point, there's a good chance you'll be treated to one of the most wonderful sounds that a cat has in their repertoire. And that's the purr.

Cats first purr when they're kittens with their mum and their siblings in the lovely, cosy environment of the nest. And I think this is a way of communicating contentedly with your siblings, but also a way of self-soothing. It's sort of a sign that, you know, everything's good and I want it to stay this way. So when they get older and you've got your cat on your lap and it's snuggling away and you're stroking it, they do the same thing then. They feel content and so they start to purr.

For a long time, they didn't know how cats purred at all. But current science says that purring is controlled by a neural oscillator or purring center in the brain. And this sends signals to the muscles of the larynx. And these muscles open and close the space between the vocal cords, which creates vibrations at a rate of 25 to about 150 a second. And this results in a sort of continuous purring sound as the cat inhales and exhales.

And what's really interesting about purring is that whilst domestic cats can purr and some of the larger wild cats can purr like cheetahs, some of the big cats, lions for example, roar. But they can't purr. So cats that roar can't purr and vice versa. And they think that this is to do with the structure of the vocal cords. Basically, the big cats have much fleshier vocal cords than those that can purr. So it makes a different noise.

If a cat is really relaxed, its purr might be accompanied by the rhythmic motion of tiny paws making biscuits. This behaviour starts as kittens, when kneading on their mother helps to stimulate milk production. And like purring, kneading continues into adulthood. It brings them comfort and also marks their favourite people and places with the scent glands in their feet.

Purring might be the ultimate sign of feline contentment, but not every purr is a happy one. Cats also purr when they go to the vet sometimes, when they're feeling a bit stressed. And cats have also been known to purr when they're actually dying and in pain. So in that situation, it must be some kind of self-soothing purr.

hark back to kittenhood where purring brings some sort of comfort. Purring might also be an audible signal to potential enemies. Basically, whether it's happy or suffering, a purring cat is not a threat.

But not every sound that a cat makes is meant to communicate something. Some they seem to make out of pure, enigmatic instinct. So chittering or chattering is what a cat does. Usually when it's watching something out of a window, like a bird, it can't get to... It's a funny noise. It almost sounds like their teeth are chattering. Chittering.

It's like they can't help themselves, it just comes out. What it actually means, however, is a bit of a mystery. It's a sound that seems to be reserved for prey animals that are just out of reach. It's most likely frustration, I think, or some people have said that cats are attempting to attract the attention of the birds outside, or even trying to mimic the birds themselves. The vocal habits of cats can also change throughout their lifetimes.

They get a sort of cognitive dysfunction type thing as they get older, a bit like people, and they can get quite disorientated, particularly at night. As a result of this feline dementia, an older cat can end up making more noise than ever. We had a cat that did that when he was 19, and he would wander the hall at night going, wow, wow.

The best way to help that is to leave some gentle lights on, put the radio on, because quite often they're looking to find you and they can't work out where you've gone. So while cats can sometimes seem aloof and superior, the reality is that they're doing their best to communicate with us.

It's not their fault that we're too wrapped up in our own human world to notice. We think of everything in terms of how humans experience the world. We're very obsessed with vocalizations and talking all the time. But cats don't. They live in a world of scent. It's all about how something smells. They're coming at everything from a different point of view and we just have to try and look at it from their point of view.

By learning more about that point of view, we can strengthen our relationship with these creatures that we spend years and years of our lives with. Every bit you learn about your cat creates a better relationship with them long term. Traditionally, understanding our cats has meant paying close attention to their noises, body language and behaviour. But today, modern technology is taking us one step further and giving our pets the tools to start communicating on our level. I want food.

In particular, there's one trailblazing feline that has shed light on how cats think and helped to open the door to a more collaborative relationship between humans and pets. Cuddle. Yes, baby, cuddle. That's coming up after the break.

Every single episode of this podcast has been recorded with the Shure SM7B. It's an incredible studio microphone that I absolutely love, but it does require an audio interface to connect to a computer, which means one more thing to pack if you want to take it on the road. That's why I'm a big fan of Shure's new MV7i mic. It's lightweight, portable, and plugs directly into your computer or phone with a USB-C cable.

With the MV7i, the interface is actually built right into the microphone itself. It also allows for you to connect a second mic into the MV7i, which makes it perfect for recording podcasts and interviews on location. You can record these two channels as one merged mono track,

as two multi-track mono files, or as a single stereo file. It also has an optional auto level mode that dynamically adjusts the gain based on your proximity, speech volume, and room acoustics. And with the Shure Motive app, you'll get top-notch audio processing that makes your voice sound professional, no matter what your level of experience is.

The MV7i has come with me on several trips at this point. I recommend it to both professionals and to anyone just starting out. To learn more, visit Shure.com. That's S-H-U-R-E dot com. ♪

Hey listeners, you might have noticed that we did a special double feature today and released two episodes at the exact same time. One about cats and one about dogs. I'm curious if we have more cat people or dog people in our audience. And to find out, I'm going to see which one gets the most shares. So take a moment to think about the people in your life who love cats or dogs and share the episode with them. All you have to do is tap that share button in your podcast player and send it to a friend or family member.

If they listen to it, it'll count. I'll announce the winner in two weeks. Now, on to the mystery sound. Congratulations to Jessica Loyce for getting last episode's mystery sound right.

Would you stand me on my head? That's the voice of Real Talkin' Bubba, a wisecracking teddy bear that was released by Mattel in the mid-90s. Bubba also said things like... Go on, wiggle my head and flop on my hair. Bubba was voiced by character actor Gary Grubbs, who's appeared in everything from Dukes of Hazzard to Django Unchained to Glee. Here's Gary playing a sheriff on The X-Files. Well, we didn't find any evidence of criminal activity, and since nobody turned up, we just...

Went ahead and filed a missing persons report. And here's this episode's mystery sound. If you know that sound, submit your guess at the web address mystery.20k.org. Anyone who guesses it right will be entered to win a super soft 20,000 hertz t-shirt. And if you want to snag a super soft t-shirt right now, just head to 20k.org slash shop.

This episode is brought to you by State Farm. You might say all kinds of stuff when things go wrong, but these are the words you really need to remember. Like a good neighbor, State Farm is there. They've got options to fit your unique insurance needs, meaning you can talk to your agent to choose the coverage you need, have coverage options to protect the things you value most, file a claim right on the State Farm mobile app, and even reach a real person when you need to talk to someone. Like a good neighbor, State Farm is there.

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Indeed.com slash Hertz. Terms and conditions apply. Hiring Indeed is all you need. Cats may not be the most forthcoming communicators, but if we can learn to read their body language and the nuances of their meows, we'll have a much better chance of knowing what they're thinking. But these days, there are a few cats making waves for speaking human, leaving us with no room for misunderstanding. And one of those cats is Billy.

Billy was a sweet cat to everyone except for the cats and dogs that she did not like. That's Kendra Baker, Billy's human mum. Kendra's a travelling veterinarian for zoos and wildlife. She and Billy first found each other 16 years ago. I was in undergrad and was driving home with a friend and a furball ran across the road chasing a rodent of some kind. Ah!

Unfortunately, the cars on the other side of the road did get into a little bit of a fender bender, but I jumped out of the car and I picked her up and my friend and I drove around trying to find her home. We put up all sorts of signs and no one claimed her. So she just ended up staying with me. I wasn't necessarily in the market for an animal at that point, but I am very glad that the cat distribution system chose me.

Billie was about four months old when Kendra brought her home. She grew into a beautiful gray calico with big green eyes. Billie was always that cat that people who didn't like cats, they changed their mind once they met her. She just had the biggest personality, was always just wanting to be around other people and just had this love for exploring and new things that really spoke to me.

From an early age, Billy was a great communicator. Billy was incredibly verbal, and when it was food time, we would get a frantic kind of running around my ankles, tails upright, whiskers are forward, and a nice long meow. Meow! Meow!

As a veterinarian, Kendra knows the importance of a strong mutual understanding with our pets. For a lot of us, they are a huge part of our lives. But for the most part, they live in a dictatorship. You know, it's a dictatorship built on love. But we decide when they eat, we decide what they eat, we decide when they go outside, we decide the extra things that they get in their life, any kind of enrichment we are responsible for. And that's

That's their entire life. And so I do think that there is a lot that we can do to really improve their quality of life. Kendra was always on the lookout for ways to enrich Billy's life. She started following a few people on social media who were teaching their dogs to use buttons that would play back a word when stepped on.

The buttons in animals are a concept that was taken from human speech pathology. And in humans, it is called alternative and augmentative communication. And it is a way to give nonverbal humans a voice. And the principle is essentially the same. You choose words that are rewarding or reinforcing for your learner, whether it's a dog or a cat.

To teach a dog or a cat a new word, you have to model it just like you would with a baby. If someone hands you a cup and says cup every single time for three weeks, you're probably going to associate that object with that word. Cup.

At first, Kendra wasn't sure if these buttons would work with Billy. I didn't know any cats that were doing it. And at that point, the only buttons that were available were the ones that they used in humans, so the really large learning resources buttons. And when I looked at them, my biggest concern was that Billy wasn't actually going to be heavy enough to depress them.

To start out, Kendra went against what everybody online recommended and introduced the food button first. And the reason that that is not recommended is that frequently they can become fixated on it. Oh, oh, oh.

But Kendra figured that if Billy did have the strength to push that big button, food would be the best possible motivator. So that's what we did. And it took her about three and a half weeks of consistent modeling before she pressed the button with intent. After that, Kendra started to introduce more buttons. And then from there, it really increased at a pretty rapid rate. I had no idea just how big it would get.

Eventually, Billie's button board grew to over 75 individual words. Play. Food. Pets. Tummy. Later. Yes. Have you? Button. She used them all, some of them significantly more frequently than others. When I started, I was definitely going to tell you that food would be her most pressed button. But actually, it turned out to be a tie between pets and play.

The buttons gave Billie more of a voice, helping her to get the attention she wanted in a noisy human world. The point of them is to give your animals a way to express their desire in a manner that humans pay more attention to. Prior to the buttons, if Billie wanted to play, her choices would have been to, you know, come up to me, maybe move around my legs, potentially bring me a toy.

But all of those are kind of soft requests when you are used to verbal communication the way that we are as humans. So when the buttons are involved, it becomes significantly harder for us as humans to ignore a play request. Play. Play. Billy could also express things that otherwise would have been much harder to read. For instance, when Billy's dad went out of town, Billy asked for him repeatedly. Chad!

Dad not home. At home. Later, later. Couple more days. Over time, Billy began to speak more English than Kat. She would press up to 200 a day, more sometimes depending on how long I was home for. She did still meow occasionally, but significantly less. And usually it was in situations where she really wanted to play and we were not listening to her. It was more of an exclamation point. Katniss.

Not all of Billy's buttons were for tangible objects or simple actions. Some communicated more abstract concepts, like love, favourite or mad. So how do you model something like mad to a cat?

Anyone who has had a cat, they know that any mild inconvenience is probably going to be catastrophic for them, right? So for Billie, it was mild inconveniences. So if it was not food time, but she wanted food, then we would model mad. Mad. Mad.

The other one that I did frequently for Billie was she would love to be on my lap whenever I was sitting down. And if I let her, she would just stay there all day. She would never move. So unfortunately, every time that I needed to move her to go to the bathroom or to get up, to go to work, I would model the mad button. Mad. And I only modeled the mad button three times before she started pressing it on her own. Billie, why are you mad? It works.

To very much so anthropomorphize, it seemed like she had just been waiting for the opportunity to say it to me. And she finally got it. And she was like, oh, thank you. I have been holding this inside forever. Mad. Why are you mad? Because there's a yoga mat in the middle of the floor? Oh, because you want food. Okay, that makes more sense. Later. Later. I know. I know. I know you're mad.

Billie got so good at using these buttons that Kendra started posting videos of her online. You know, I posted one of her very early videos on TikTok. Okay, you can have more of this. All right. You only have to press it once.

And I woke up in the morning and it had gone viral. The buttons were still incredibly new at this point. And then Billy was the first cat. So I think that kind of kickstarted us. And then once Billy got a hold of the mad button, it was all over. People just love the idea of a cat that knew the word mad. The Dodo interviewed Kendra for a video called This Cat's Favorite Word is Exactly What You'd Expect.

My aunt is mad, but... Why are you mad? That was absolutely her favorite word. And she would not stop pressing it. That video alone has over 25 million views. And today, Billie's social media channels have almost a million total followers. That's crazy to me. I still can't wrap my mind around the fact that that many people loved watching Billie.

Billy became affectionately known as her "Mad Justee," and this one cat and her owner became an inspiration to thousands. Most of the comments that I get are, you know, "You really have taught me a better way to interact with my cats or improved the communication that I have with my cat currently." And they have expressed that my relationship with Billy helped their relationship with their cats. That's a very humbling experience to read all of those because I had no idea.

Eventually, Billie caught the attention of scientists studying how animals think and communicate. Today, there's a collaborative research project being done around pets that use these speech buttons, including Billie. This is the largest citizen science project that has ever taken place. There are participants in every continent except for Antarctica.

There are numerous languages, so it's not just people who speak English who are doing this. The new buttons are actually Wi-Fi enabled, and so every time they're pressed, that press gets sent into an app, and the lab has access to all of that. So they're really able to get a ton of data.

With all that data, scientists hope to figure out once and for all what cats and dogs are capable of understanding and expressing. But even without this research, Kendra still recommends buttons as a way of enhancing your relationship with your cat. For them, it is really just enrichment for their life. It is a way for them to have a little bit more control over their day-to-day. And of course, it's rewarding for the owners too.

Every interaction with her was just a delight. Every time that she pressed the "mad" button, every time that she did anything with her buttons, it just gave me so much joy. I love you too. Want some pets? Yeah? Good girl. Love you. Love you. Okay. I love you too. I'm glad I'm home also.

We learn a lot in veterinary school about your domestic animal behavior, but I think that living this experience with Billy probably did more for me for feline behavior than any of my classes ever did. And it really makes you reevaluate the way that we interact with our pets.

As Billie got older, she started to need more of Kendra's professional veterinary help. So Billie was born with a condition called polycystic kidney disease. And what that means is that from birth, her kidneys started throwing cysts out. So little pockets of fluid. And initially, there isn't necessarily any abnormal signs that you see with that, but it does predispose cats and humans to kidney failure.

When Billie was 12, her health took a turn for the worse, and she underwent a series of operations to keep her kidneys working. In cats, we grade kidney failure in four different stages. One is the lowest and four is the highest, and she had been managed at two prior to that last surgery, and then afterwards, she was steadily in the three phase. But unfortunately, earlier this year in February, I did find that her blood values had increased again, and she had jumped into stage four.

At that point, Kendra's options were pretty limited. There is no cure. There's not really a way to turn back time. You can really only manage the symptoms once it gets to a certain point. From then on, Kendra's priority became making sure that Billy had the best possible quality of life. To help with this, she used Billy's ouch button. Ouch. As well as a new one. Medicine.

Having to give your cat a pill is a lot for you, but it's also a lot for them. If you can imagine that the roles were reversed, if you had the flu and someone jumped on you once a day and shoved something in your mouth, I don't think that we would really associate anything good with that. So instead of forcing pills down her throat or hiding them in food, Kendra used the medicine button to help Billy understand.

I made sure that she saw what I was doing with the pill. And then using my words, I would say, medicine, help, ouch, bye. And I would say, medicine, then food. And within 36 hours, she started taking it voluntarily. And I have...

A number of these videos of it's so cute to watch them because you can tell that she hates it. You know, she'd pick up the pill and then she'd kind of and then she'd drop it and then she'd pick it up and then she'd drop it and then she'd finally like swallow it. But it took a really long time. It was fascinating to watch how just 36 hours of me changing my behavior led to this improvement in our ability to make sure that she was well managed.

Slowly but surely, Billie started using her buttons less and less. When I stopped to think about it, it really made sense. You know, if you're not feeling well, the last thing that you want to do is have a conversation with anyone, right? It just takes a lot more energy. Eventually, Billie wasn't eating much. Then she stopped wanting to go outside.

I'm thankful because she declined pretty rapidly there at the end. We had a couple of good days, but then when I got home, she was just under the bed and not really responding to me and wouldn't get up. So that was kind of a cue of, okay, we're done.

We're definitely not coming back from this one. So I made the decision for her to have an end that did not last days. So the decision of watching her slowly waste away versus allowing her to pass peacefully, I absolutely chose the latter. It's definitely the one that I would choose again and again rather than watching my best friend fade.

I spoke to Kendra just a couple of weeks after Billy had passed. It is definitely raw. It's definitely an adjustment that I have not really thoroughly internalized yet. It's weird when there's a presence in your life for almost 16 years to just not have them there anymore.

Whether it's using tools like Billy's buttons or just taking the time to get to know our cat's sounds and body language, both pets and owners stand to gain so much. I think that Billy really helped me to become just a more compassionate person in general, a more empathetic person.

I found myself putting myself in her shoes. And what that did is it made me look outside of myself in every aspect of my life. And I think that she probably improved my ability to be a kind human, not just for other animals, but other people as well. It becomes a lot easier to look at someone who is not like you and really feel empathy for that situation.

I think she just made me a better person. I love you too. I love you too, baby. Yes. Yes. Yes. I love you. 20,000 Hertz is produced out of the sound design studios of DeFacto Sound. Hear more at defactosound.com. This episode was written and produced by Layla Battison. And Casey Emmerling. With help from Grace East. It was sound designed and mixed by Graham Gold. And Justin Hollis.

Thanks to our guests, Sarah Brown and Kendra Baker. For more tips on how to better understand your cat, be sure to pick up Sarah's book, The Hidden Language of Cats. You can find Billy's videos on YouTube, Instagram, and TikTok under the username Billy Speaks. And if you want to learn about the buttons that Billy used, Kendra has lots of info at billyspeaks.com. I'm Dallas Taylor. Thanks for listening.