Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
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Leonardo Da Vinci loved animals so much that he used to buy caged animals at the market just to set them free.
57
It has been scientifically proven that stroking a cat can lower one's blood pressure!
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Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
16
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12