During World War 1, starving wolves amassed in such great numbers that Germans and Russians had a temporary cease fire to fight off the wolf attacks.
45
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
Urechis unicinctus is a species of marine spoon worm that is widely referred to as the ‘penis fish’.
2
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
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
Parrot parents "name" their children with a signature call.
112
Female kangaroos have three vaginas.
2