Rattlesnake mating sessions have been known to last more than 22 hours.
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Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
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The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
79
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
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Cat families usually play best in even numbers. Cats and kittens should be acquired in pairs whenever possible!
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