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
Cats and dogs can hear ultrasound.
350
Denmark has twice as many pigs as there are people.
66
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
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