In all size groups (small, medium, large, and giant), mixed breed dogs live longer than purebred dogs, although the difference is not that large. The study found that, on average, a mixed-breed dog lives for 14.45 years compared to 14.14 years for a purebred dog.

Do purebreds have more health issues?

As a result, purebred dogs not only have increased incidences of inherited diseases but also heightened health issues due to their bodily frames and shapes, such as hip dysplasia in large breeds like the German shepherd and the Saint Bernard, and patellar luxation, or persistent dislocation of the kneecap, in toy and ...

Do pure breeds live longer than mutts?

One study of companion dogs “did not find significant differences in lifespan between purebred and mixed breed dogs; however, breeds with larger effective population sizes and/or lower inbreeding coefficients had median survival times 3-6 months longer than breeds with smaller effective population sizes or higher ...