狗是一種平常的犬齒動物，是狼的近親。它壽命差不多xx年—最多30年。
dogs usually refers to the dogs, also known as dogs, a common canine mammals, is a close relative of the wolf. often referred to as human best friend is also the highest rate of keeping pets. his life was about ten - more than three decades, in the absence of an accident, the average life span of small dogs to be longer.