Howlers are New World monkeys found in tropical Central and South America. They are aptly named for their cacophonous cries. When a number of howlers let loose their lungs in concert, often at dawn or ...

There's something suspicious about that rock ...

February 25, 2026 • A new study finds that horse whinnies are made of both a high and a low frequency, generated by different parts of the vocal tract. The two-tone sound may help horses convey more ...