The North American Mastiff has been developed over many years by selectively cross breeding.

It’s a highly attractive family guardian that’s great with children but could also be trained as a working dog. The North American Mastiff is a breed of medium to large-sized with a heavy bone structure, their personality is very laid back and family orientated but protective of their surroundings. Agile and muscular in stature but still very mobile, a breed of dog that gives the impression of intelligence and ability.

The American XL Bully is a companion breed exhibiting confidence, a zest for life, along with an exuberant willingness to please and bond.

American XL Bullies love pleasing their owner which makes them easy to train and adapt to family life. The American XL Bully is a beautiful and impressive muscular dog, yet despite their fierce and powerful appearance their demeanour is gentle. XL Bullies share the same build and body type as the Standard American Bully, but are determined by their superior adult height and block-style head.