Dogs have been man's pet for over 14,000 years.
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Cats sleep for 70% of their lives.
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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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Cat families usually play best in even numbers. Cats and kittens should be acquired in pairs whenever possible!
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When Koko, the gorilla famous for knowing sign language, was asked where gorillas go after death, she responded by signing “Comfortable hole, bye.”
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Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
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