In 2013, a study found that mixed breeds live on average 1.2 years longer than pure breeds, and that increasing body-weight was negatively correlated with longevity (i.e. the heavier the dog the shorter its lifespan).
In 2013 , a study found that mixed breeds live on average 1.2 years longer than pure breeds , and that increasing body - weight was negatively correlated with longevity ( i.e. the heavier the dog the shorter its lifespan ) .
Mutts, dogs that have several breed characteristics, live how much longer than purebred dogs?
Mutts , dogs that have several breed characteristics , live how much longer than purebred dogs ?
1.2 years
1.2 years