Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
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Sharks have been on the planet longer than trees.
14
Bats sleep 18-20 hours per day.
5
Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12
Tigers, leopards, and jaguars love "Calvin Klein's Obsession for Men". The scent is used to attract animals to cameras in the wilderness, and was even a turn on for one pair of Jaguars who were subject to it.
17
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
There was a bear called Wojtek who was adopted by Polish soldiers during WW2. It carried ammunition, wrestled with soldiers, and drank beer.
40