Miss Riley, a large stump-tailed macaque, selects a carrot and hands it to her roommate ... Because George wasn’t properly tested before entering the US, authorities placed baby George in strict ...

Primate species in research include rhesus macaques, long-tailed (a.k.a. crab-eating or cynomolgus) macaques, stump-tailed macaques, pig-tailed macaques, squirrel monkeys, owl monkeys, African green ...