Feeding Time

The animals escaped from 'Chimp Island' and found their way into a keeper area where their food is prepared, the zoo said.

Looters.

Source.

Meat Market

"We found that females copulated more frequently with males who shared meat with them at least on one occasion, than with males who never shared meat with them, indicating that sharing meat with females improved a males' mating success," the report said.

A man unknowingly shares meat with a female chimpanzee.

Source.