A three-year-old boy fell eighteen feet into a zoo enclosure containing seven gorillas. He was immediately rescued, not by zookeepers, but by one of the animals. The 150 lb. female gorilla picked up the unconscious form of the boy and laid it at a door to be easily retrieved by zookeepers.
This cross-species rescue has resulted in thousands of dollars in donations to the zoo. It is perhaps because of these donations that zookeepers have kept quiet about one vital detail, a hastily scrawled note tucked in the boy's collar: "Thanks; but we prefer fruit."