11,490

Barbara Bush's book about her English Springer Spaniel, Millie's book, was on the bestseller list for 29 weeks. Millie was the most popular "First Dog" in history.

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11,491

Beaver teeth are so sharp that Native Americans once used them as knife blades.

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11,492

Before the enactment of the 1978 law that made it mandatory for dog owners in New York City to clean up after their pets, approximately 40 million pounds of dog excrement were deposited on the streets every year.

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11,493

By feeding hens certain dyes they can be made to lay eggs with varicolored yolks.

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11,494

Camel milk does not curdle.

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11,495

Camels have three eyelids to protect themselves from blowing sand.

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11,496

Carnivorous animals will not eat another animal that has been hit by a lightning strike.

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11,497

Cat scratch disease, a benign but sometimes painful disease of short duration, is caused by a bacillus. Despite its name, the disease can be transmitted by many kinds of scratches besides those of cats.

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11,498

Catfish have 100,000 taste buds.

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11,499

Catnip can affect lions and tigers as well as house cats. It excites them because it contains a chemical that resembles an excretion of the dominant female's urine.

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11,500

Cats are the only domestic animals that walk directly on their claws, not on their paws. This method of walking is called "digitigrade." When cats scratch furniture, it isn't an act of malice. They are actually tearing off the ragged edges of the sheaths of their talons to expose the new sharp ones beneath.Cats have a third eyelid called a haw and you will probably only see it when kitty isn't feeling well.

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11,501

Cats have amazing hearing ability. A cat's ear has 30 muscles that control the outer ear (by comparison, human ears only have six muscles). These muscles rotate 180 degrees, so the cat can hear in all directions without moving its head.A cat has four rows of whiskers.

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11,502

Cats have better memories than dogs. Tests conducted by the University of Michigan concluded that while a dogs memory lasts no more than 5 minutes, a cat's can last as long as 16 hours - exceeding even that of monkeys and orangutans.

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11,503

Cats have more than one hundred vocal sounds, while dogs only have about ten

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11,504

Cats purr at about 26 cycles per second, the same frequency as an idling diesel engine.

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