2. LONGER LIFESPAN

A longer lifespan is a logical consequence of the fact that mutts are generally healthier than purebreds. A dog that was cross-bread from two different breeds will most likely live longer than the average lifespan of either of those breeds.

Dogs from certain breeds may start suffering from their typical genetic conditions at a very young age, even as puppies, while mutts usually get sick later on in their life, if they get sick at all. As a consequence, they live longer.

But it’s not just that. Many dog breeds are known for very short life spans. For instance, Dogue de Bordeaux only lives five to eight years, the Great Dane up to eight while the average life expectancy for the Neapolitan Mastiff is seven to nine years. You don’t see this in mutts. Since they are unique, there is no average lifespan, but they definitely tend to live much longer than purebred dogs, even up to 20+ years.