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Dog behavior
Dog behavior is the internally coordinated responses (actions or inactions) of the domestic dog (individuals or groups) to internal and/or external stimuli.〔 As the oldest domesticated animal species, with estimates ranging from 9,000–30,000 years BCE, the behavior of dogs has inevitably have been shaped by millennia of contact with humans. As a result of this physical and social evolution, dogs, more than any other species, have acquired the ability to understand and communicate with humans and they are uniquely attuned to our behaviors.〔 Behavioral scientists have uncovered a surprising set of social-cognitive abilities in the domestic dog. These abilities are not expressed by the dog's closest canine
relatives nor by other mammals such as great apes. Rather, these skills parallel some of the social-cognitive skills of human children.〔
==Evolution/Domestication/Co-evolution with humans==
(詳細はgenome sequencing indicates that the dog, the gray wolf and the extinct Taymyr wolf diverged at around the same time 27,000-40,000 years ago. How dogs became domesticated is not clear, however the two main hypothesis are self-domestication or human domestication. There exists evidence of human-canine coevolution.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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