The colossal squid has the largest eyes in the world.
4
There are approximately three chickens for every human on Earth.
13
When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
Parrot parents "name" their children with a signature call.
112
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
Rattlesnake mating sessions have been known to last more than 22 hours.
232