india's oldest chimpanzee, rita, killed a bat and began eating it inside a zoo

africa aggressiveness ape asian big bipedal bonobo captive chimp chimpanzee chipmanzee climb common delhi dominance endangered expressions expressive faces facial forest great herbivorous hierarchy honey human hunting india indian knuckle-walking lineage long male-dominated mockman oldest pantroglodytes pelvis quadrupedally rainforest rita savanna savannahs swamp toe tropical unpredictability vertical walk zoo