A chimpanzee inserts a 100 yen coin into a drink vending machine. Chimpanzees in Tama Zoo in the western suberbs of Tokyo buy soft drinks from a vending machine. The zoo, which is seen as one of Japan's most inovative, has installed a vending machine. The Chimps are given a 100 yen coin which they insert into a vending machine and are given a can of fruit or vegetable juice. The chimps then put the empty can into the waste machine for recycling.