Some male chimpanzees use covert physical gestures to sneakily solicit sex. According to a new study, these mating moves vary ...

Peggy, the 55-year-old chimpanzee at John Ball Zoo, died after a steep health decline, the zoo said in a Jan. 29 Facebook post. She defied life expectancy odds for most female chimpanzees.

In chimpanzee communities, sexually maturing females leave their social groups to find another community, an evolutionary trait that helps avoid inbreeding. Apart from adding diverse genes to a ...