A new study found that horses are whistling and vibrating their vocal cords at the same time to create the distinct neigh that accompanies the animal.

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, ...

A few small rodents like rats and mice whistle like this, but horses are the first known large mammal to have a knack for it. They’re also the only animals known to be able to whistle through their ...