狗是一种平常的犬齿动物，是狼的近亲。它寿命差不多10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.