Horses 'whinny' to find new friends, greet old ones and celebrate happy moments, like feeding time. But how exactly they produce the distinctive sound - also called a 'neigh' - has long eluded ...

The sounds of farm animals are someone of the first things we learn as kids. The cow goes “Moo.” The sheep goes “Baa.” The pig goes “Oink.” And yes — you guessed it — the horse goes “Neighhhh.” But ...