These fall into three major groups: 172 Old World monkeys and apes (Catarrhini), 146 New World monkeys (Platyrrhini), and 144 lemurs, lorises, and galagos (Strepsirrhini). They’re not just ...

Yodelers of the world, you never stood a chance: Monkeys will always be better at yodeling than humans because they have a "cheap trick" hidden in their voice box, scientists revealed Thursday.