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
Sheep, goats, octopuses, and toads have rectangular pupils.
7
Lurch, a Watusi bull, had the largest horns in the world.
32
Macaques monkeys in Japan learned to steal purses and wallets, take out the coins, and use them to buy drinks and snacks from vending machines.
26
If a vampire bat goes 2 days without drinking blood, they can die. However, well fed female bats will puke up blood and share it with other bats that they like in exchange for grooming.
13
A banana slug can be 6-8 inches and their erect penis can be just as long. Also, their penises emerge from their heads. After sex, banana slugs eat each others penises.
17
Bats sleep 18-20 hours per day.
5
The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492