Dog, Domestic carnivorous mammel generally considered the first domesticated animal. The domesticated dog has coezisted with human beings as a working partner and household pet in all eras and cultures sinc the days off the cave dweller. It is generally believed that the direct ancestor of the domestic dog is the wolf, originally found throughtout europe asia and north america. Remains od a dog estimated to be 10,500 years old have been found in Idaho.
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