When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
The cat brain weighs about 30g.
167
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
The elephant brain weighs about 6,000g.
274
Parrot parents "name" their children with a signature call.
112
A dork is a whale's penis.
327