When cats are happy, they may squeeze their eyes shut.
10
Sharks have been on the planet longer than trees.
14
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
Two dogs were among the Titanic survivors.
262
Cats sleep for 70% of their lives.
8
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14