Yeah, I suspect that with dogs that overbreeding is a bigger issue. We have a Bernese Mountain Dog, they don't have a good health profile, for example all the "

Yeah, I suspect that with dogs that overbreeding is a bigger issue. We have a Bernese Mountain Dog, they don't have a good health profile, for example all the "large chested breeds" are at risk of "bloat" or gastric torsion. If this isn't caught quickly then it's fatal (blood supply to the stomach is interrupted). This is something that happens through artificial selection for size, i suspect that it is rare in wolves.