Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
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One reason that kittens sleep so much is because a growth hormone is released only during sleep.
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The oldest known animal in the world was 'Ming' the 405 year old clam, discovered in 2007.
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Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
12
Dogs sometimes fake being sick to get attention.
26
Lobsters have blue blood.
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