Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
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There are approximately three chickens for every human on Earth.
13
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
When a drone bee mates with a queen, its ejaculation is so powerful that it can even be heard by the human ear.
5
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255
The head of a jellyfish is called the "Bell."
6