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According to PetMD, the average life span of a mixed breed dog under 90 pounds is 11 years, while larger dogs live for about eight years. For purebred dogs, life expectancy varies by breed.


The longevity of a dog's life largely depends on a variety of factors, with breeding and genetics being two of the most important. On average, the lifespan of a dog is 11 to 12 years.


Dogs can become dehydrated within a few hours in hot summer weather, says veterinarian Cynthia Otto, DVM, PhD. In the case of extremely hot weather, older dogs, those with heavy coats and those suffering severe dehydration can die in less than a day.


A dog year is equal to seven chronological years. The "dog year" was invented to describe how dogs age faster than humans. The practical use of the dog year, however, is limited because it is an oversimplification of reality.


How long a dog flea survives depends on several factors. The average flea survives a few days to two weeks without a food supply, and they can live much longer with a host.


Boxer dogs typically live for 11 to 14 years. This breed is susceptible to a number of genetic diseases that could potentially be fatal, including aortic stenosis and dilated cardiomyopathy. The risk of a boxer developing these health issues can be mitigated through the...


The average life expectancy of a domestic, indoor cat is 15 years, though cats commonly reach 18 to 20 years old. Feral, outdoor cats have an average life expectancy of approximately six years.