Dogs have been man's pet for over 14,000 years.
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The CIA once spent $20 million on a cat equipped with gear to spy on the Soviets, but it was hit by a taxi.
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The cat brain weighs about 30g.
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Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
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Jellyfish as a species are actually older than dinosaurs and sharks.
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