The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
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Nervous dogs wag their tails to the left, and happy dogs to the right (from the dog’s point of view) – and fellow canines pick up on this lop-sided tail language.
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The ancestor of all domestic cats is the African Wild Cat which still exists today.
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Sandy, an African Penguin, has been in 'love' with her keeper at the Nuremburg zoo since 1996.
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