Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
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Whales and dolphins can't taste anything other than salt.
11
A cat rubs against people not only to be affectionate but also to mark out its territory with scent glands around its face. The tail area and paws also carry the cat's scent.
293
The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
8
When you shave a guinea pig it looks like a little hippo.
19
Early American humans hunted car-size armadillos and used their shells for houses.
12