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Cats' eyes shine in the dark because of the tapetum, a reflective layer in the eye, which acts like a mirror.

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The earliest ancestor of the modern cat lived about 30 million years ago. Scientists called it the Proailurus, which means “first cat” in Greek. The group of animals that pet cats belong to emerged around 12 million years ago.

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A tomcat (male cat) can begin mating when he is between 7 and 10 months old.