In the humid rainforests of northern and eastern Madagascar reside seven newly described frog species. They often hang out near fast, flowing rivers. These treefrogs' high-pitched, "futuristic" sounds may help male frogs attract females over the sound of nearby rushing water. They also are what inspired their *Star Trek-*themed names. *Have another animal you want us to dig into for a future episode? Email us at [email protected])!*Learn more about sponsor message choices: podcastchoices.com/adchoices)NPR Privacy Policy)