Most police departments do not allow their working dogs to breed.

The category also includes curs, American dogs bred for hunting bears, feral pigs, and similar large game.

Surely, many dogs are breeding just as good, if not better, dogs than a lot of humans.

Large dogs bred for fighting have become a safety hazard in some projects.

In interviews Harris said "We don't allow dogs to breed.

A dog originally bred to guard property, for example, will be more defensive when the doorbell rings.

But dogs bred for sporting and hunting purposes are less concerned about turf, focusing instead on interaction.

Having said all that, there have been some very nice dogs bred in Australia, not only achieving high show placements, but also major obedience awards.

Populations are particularly vulnerable when the dogs bred are closely related.

The German shepherds, dogs bred for their loyalty and intelligence, were going berserk.