Annoying chihuahuas can live up to 15-20 years
A beautiful leonberger (one of the biggest dog breeds) lives up to only 7-8 on average.
Could somebody here please explain why bigger dogs have shorter lifespans?
Annoying chihuahuas can live up to 15-20 years
A beautiful leonberger (one of the biggest dog breeds) lives up to only 7-8 on average.
Could somebody here please explain why bigger dogs have shorter lifespans?
It's because they're bigger. Duh.
Because while humans were selecting them for size they were also selecting them for either short lifespan genetically or selecting them for a predisposition to life shortening diseases.
A larger dog also uses up its telomeres faster than a small dog.