Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
The oldest recorded elephant lived for 82 years.
213
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
The cat brain weighs about 30g.
167
The elephant brain weighs about 6,000g.
274