One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
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
Hummingbirds can't walk.
32
The octopus does not have a blind spot.
273
A blue whale's heart is the size of a Volkswagen Beetle!
37
Only female mosquitoes bite and drink blood.
28
A rodent's teeth never stop growing.
16