Ants have tiny magnetic compasses in their antennae which help them navigate.
9
A group of pugs is called a grumble.
10
Cats recognise the voice of their owner, but never evolved to care.
22
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
Tigers, leopards, and jaguars love "Calvin Klein's Obsession for Men". The scent is used to attract animals to cameras in the wilderness, and was even a turn on for one pair of Jaguars who were subject to it.
17
Squirrels forget where they hide about half of their nuts.
698
Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
16
Alligators can live up to 100 years.
337