狗属食肉目犬科动物,嗅觉、听觉灵敏,是人类最早驯养的动物。狗的祖先是狼,DNA 证据表明,狗从狼进化过来的时间,与早期人类首次离开非洲大陆的时间大致吻合,也就是说早在13万5千年以前,狗就成为人类的狩猎助手并与人类一起生活了。但一般认为,狗与人类结成伙伴关系约在1万年以前。家狗 Dogs are carnivores canine, smell, hearing sensitive, is the earliest human domesticated animals. Dogs' ancestors were wolves. DNA evidence showed that dogs evolved from wolves roughly in time as early humans left Africa for the first time, meaning that as early as 135,000 years ago, dogs became hunt assistants to humans and Humans live together. However, dogs and humans are generally believed to have been in partnership about 10,000 years ago. Dogs