How long a dog will live depends on its breed and environment. Female dogs will also usually live one to two years longer on average than will male dogs, and the majority of strays will live considerably short lives compared to a dog who is sheltered and cared for by humans. In general, the smaller the breed of dog, and the closer its facial and body structure looks to that of the wolves that dogs originally come from, the longer it will live. Some larger, flat-nosed dogs, such as the Dogue de Bordeaux, will only reach the age of six to eight on average. A smaller, longer-nosed dog such as the poodle, however, may reach sixteen or even eighteen. The oldest dog whose age could be documented upon its death was an Australian cattle dog named Bluey. He lived to be 29 years old.