Domestic pigs average a top speed of about 11 miles per hour.
182
Sharks have been on the planet longer than trees.
14
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
13
When cats are happy, they may squeeze their eyes shut.
10
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
