A full-grown bear can run as fast as a horse.
35
A blue whale's aorta (the main blood vessel) is large enough for a human to crawl through.
52
A species of earthworm in Australia grows up to 10 feet in length.
10
Armadillos can get leprosy.
13
The world's largest amphibian is the giant salamander. It can grow up to 5 ft. in length.
66
The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
492
If NASA sent birds into space they would soon die; they need gravity to swallow.
146
A hedgehog's heart beats 300 times a minute on average!
14