Videos of Punch, a baby monkey, and his Ikea toy went viral on TikTok. Reeno Hashimoto took three trains to the zoo, east of Tokyo, to see what all the fuss was about. Visitors at Monkey Mountain ...

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 ...