How long is life of dogs

Dogs can live long, the most important factor is the origin and variety. Secondly, the environment, health, sports, eating habits and feeding and management factors are the life span of dogs have a certain impact. Some species of dogs live longer and can live 18-20 years or even more than 20 years, and some varieties of short-lived dogs, only live 12-15 years, most of the dogs an average age of 14 years. Generally speaking, the more pure-bred dogs, life expectancy shorter than that. Under normal circumstances, small dogs than big dog longer life expectancy, hybrid dogs than purebred dogs a longer life than the female dog long service life, in the family kept stray dogs out of the dog than a longer life. Mastered the knowledge of the life of dogs, we can phase in dogs of different ages to take care on all fronts.