An average cat has 1-8 kittens per litter and can have 2-3 litters per year. During her productive life, one female cat could have more than 100 kittens. A single pair of cats and their kittens can produce as many as 420,000 kittens in just 7 years.
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The first known contraceptive was crocodile dung, used by Egyptians in 2000 B.C.
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A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
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In the movie 'The Wizard Of Oz', Toto the dog's salary was $125 a week, while Judy Garland’s was $500 a week.
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Dire wolves actually existed, living up to 10,000 years ago before going extinct.
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There's a phone app called RoboRoach that allows you to remotely control a cockroach through a chip that you to manually implant into the unwitting critter.
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