Very similar dogs. I have a Staffy Bull Terrier now. Wonderful animal

I have an affinity for Staffordshire Terriers, for very similar reasons. Sadly, many are still bred for fighting, because of their jaw strength. They tend to be very good around kids though. Some tests score them as second to Golden Retrievers in how tolerant they are to kids poking, tugging, and just generally pestering them.

Undisciplined

I'm a huge fan of American Bulldogs. Best dog I ever owned. This "breed" has different types, but the model was the old "Southern White" working dogs of the American south. No one's quite sure of the breeding stock for the different types, but they were mostly bred for stamina, strength, health, and guarding ability. Of course, some breeders went down the looks rabbit hole,  and their dogs paid the price health wise.

siggy47

Dogs_And_Cats

Are Mutts Healthier Than Purebreds?

I don't think dogs are generally bred for optimal health, but it makes sense that they could be.

I've always wondered if someone could make money just trying to breed really good dogs, instead of pure breds. 