> Genetically, people who breed by accident or intentionally without "proper breeding practice" at least don't breed their dogs to have health problems on purpo

> Genetically, people who breed by accident or intentionally without "proper breeding practice" at least don't breed their dogs to have health problems on purpose. The argument is even stronger than stated here: Mutts are on average much healthier than breed dogs. The life span of e.g. village dogs is higher on average than pretty much all breed dogs.