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Venezuelan Red Howler (Alouatta seniculus). They inhabit rainforests and mountain forests of Central and South America. The loudest monkey. Morning roar of a red howler. Close-up.© ...

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 ...

Young, male capuchin monkeys have started kidnapping the babies of nearby howler monkeys. Why? Maybe boredom. Researchers puzzle over rash of baby monkey kidnappings On an island in Panama, a fad that ...