Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
When dragonflies mate, their tails form a love heart.
22
In Australia, there are spiders big enough to eat snakes.
20
The male seahorse carries babies and 'gives birth' to them instead of the female.
7
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