Quote Originally Posted by Love4BCs
"But they serve no direct purpose to us" Explaination:
Border Collies - herding, and can be used in things such as herding, agility, flyball..

Golden Retrievers - wonderful family pets, loyal, good with kids

Beagles - hunting

Pitbulls - nothing directly, for now, they have taken to mauling and killing
Pitbulls can do all of the stuff you listed up there. And much more....