The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
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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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The Savannah is the largest domestic cat breed. It resembles a small leopard and behaves like a dog. They can grow up to 40 lbs, have an eight foot vertical jump, and can be trained to walk on a leash and play fetch.
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The cat brain weighs about 30g.
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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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Lurch, a Watusi bull, had the largest horns in the world.
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