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
Whales and dolphins can't taste anything other than salt.
11
An Indian man known as "Snake Manu" can put small snakes, including deadly cobras, into his mouth and pass them out through his nose.
59
The seahorse is the only fish to have a neck.
12
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
10