When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
When dragonflies mate, their tails form a love heart.
22
Large kangaroos can cover more than 30 feet with each jump!
19
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
Giraffes are unable to cough.
50