Gorillas can catch human colds and other illnesses.
205
Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
17
Jaguars frequently get high by eating hallucinogenic roots, which also increases their senses for hunting.
6
Condoms were originally made of animal intestines or linen.
347
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20