The difference between antlers and horns is that antlers are shed each year and are made of bone while horns are kept for life and are made of living tissue and bone with a sheath that is very similar to human finger nails.
10
Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
In 1955, the citizens of São Paulo were so upset with their government that they elected a rhinoceros named Cacareco (meaning rubbish) to the city council in protest, with over 100,000 votes.
18
There is a sea snail that wears a suit of iron plated armor. It is the only known animal to use iron sulphide as skeletal material.
9
A dog's naked behind leaves absolutely no bacteria when pressed against carpet.
250
In 2005, in Africa, it was reported that three lions rescued a 12-year-old girl from kidnappers and guarded her for half a day until help came.
46
When cats are happy, they may squeeze their eyes shut.
10