A mother chimpanzee knows her son is sick.
A mother chimpanzee showed special care (high frequency grooming, holding, and carrying) of her child when he was sick, from which one may infer she seemed to know her son was sick.
Itakura
Shoji
S
Department of Psychology, Graduate School of Letters, Kyoto University, Sakyo, Japan. itakura@psy.bun.koyoto-u.ac.jp
D000818:Animals; D001294:Attitude to Health; D003071:Cognition; D005260:Female; D008425:Maternal Behavior / Q000523:psychology*; D002679:Pan troglodytes