Sloths take two weeks to digest their food.
243
Dolphins have names for one another.
18
A domestic cat can sprint at about 31 miles per hour.
274
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79