The male seahorse carries babies and 'gives birth' to them instead of the female.
7
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
Jumping fleas can accelerate 50 times faster than the space shuttle.
218
Cows can sleep standing up, but they can only dream lying down.
745
The ancestor of all domestic cats is the African Wild Cat which still exists today.
12