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
Gorillas can catch human colds and other illnesses.
205
A banana slug can be 6-8 inches and their erect penis can be just as long. Also, their penises emerge from their heads. After sex, banana slugs eat each others penises.
17
There are approximately three chickens for every human on Earth.
13
The elephant brain weighs about 6,000g.
274
A 42-foot sperm whale has about 7 tons of oil in it.
209
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14