A hedgehog's heart beats 300 times a minute on average!
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
Ants don't sleep
15
A chameleon's tongue is twice the length of its body.
29
Hummingbirds can weigh less than a penny!
12