Have you ever noticed the flashy, vividly colored rear ends of some monkeys? You might see monkeys with blue butts and even monkeys with red butts. Bright buttocks in primates are typically linked to ...

Between the Old World, which includes Africa and Asia, and the New World, which includes Mexico and Central and South America, there are well over 200 monkey species. Yet, nearly all species of baby ...

On an island in Panama, a fad that one researcher called "viscerally disturbing" has recently taken off among a group of young male monkeys. These adolescents and juveniles have started to kidnap the ...

When the Zoo’s newest Allen’s swamp monkey was rejected by his mother after birth, a team of staffers stepped up to care for the infant while he was young. Mike Bock Edgar shown about a week after his ...