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Dogs are the easiest animals to come into contact with around us, and they are distributed all over the world. Dogs, horses, cows, sheep, pigs, and chickens are collectively referred to as the "six livestock". Some scientists believe that dogs were domesticated from gray wolves by early humans, and the domestication time was4Ten thousand years ago~1.5Ten thousand years ago. Known as the 'most loyal friend of humans', it is the pet with the highest ownership rate, with a lifespan of approximately12~18year In Chinese culture, dogs belong to one of the twelve zodiac animals and are ranked as the second in the twelve zodiac animals11Position.
