ALL OUR MASTIFFS ARE AKC REGISTERED. They are vet checked and have no hip or joint problems and are guaranteed. We have a small farm and they play and roam around. They are friendly and have a great interaction with people. This has been a goal for me, since we had our first litter. I have been told that mastiffs are to big and wont make a great service dog, but the mastiff size and strength can pull a large person off the ground and help them up. So I’m happy to say that my puppies will be used as service dogs for vets.