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Alternate titles: Canis lupus familiaris
By Constance B. Vanacore • Edit History
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Apr. 29, 2022, 8:12 PM ET - A study of about 18,000 dogs suggests that a dog's breed is a relatively weak determinant of a dog's behavior.
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dog, (Canis lupus familiaris), domestic mammal of the family Canidae (order Carnivora). It is a subspecies of the gray wolf (Canis lupus) and is related to foxes and jackals. The dog is one of the two most ubiquitous and most popular domestic animals in the world (the cat is the other). For more than 12,000 years it has lived with humans as a hunting companion, protector, object of scorn or adoration, and friend.
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