Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
23
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
Tigers can see 6 times better at night than humans.
305