A woodpecker can peck twenty times a second.
28
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
The world's smartest pig, owned by a mathematics teacher in Madison, WI, memorized the multiplication tables up to 12.
264
Despite the hump, a camel's spine is straight.
43
Frogs cannot swallow without blinking.
41
