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
Vampire bats adopt orphans, and are one of the few mammals known to risk their own lives to share food with less fortunate roost-mates.
402
Sloths take two weeks to digest their food.
243
In 1949, an official boxing match between a bear and a man was held. The bear won.
41
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
The world’s largest frog, the Goliath frog, can grow over 13 inches in length and can jump up to 10 feet in a single bound.
8