I think it depends on the pet. My mommy dog is pure-bred beagle and she has a mellow temper and a really nice coat...but darn beagle got the scent of something and off she went! My daddy dog is a pure-bred blue heeler and is also a really nice dog, but older. The younger dog is a mix from my other dogs and looks mixed up...someone might return him

He was least attractive of the litter (the other dogs had really nice coats) but has the sweetest, most loving personality, so we kept him...nice family dog and I love him.