The ability to make two distinct sounds at once is shared with human beat boxers and throat singers. The horse whinny, or neigh, has been a familiar sound at least since the animal was domesticated, ...

An equine makes the low-pitched part of its whinny by vibrating its vocal cords—similar to how humans speak and sing—and the high-pitched part by whistling ...

C utting about the tropical wetlands of South America is a bizarre bird that’s a “unicorn” amongst its peers in more than one sense of the word. Like the mythical creature, it has a “horn” on its head ...