We at Stonehaven Mastiff’s have a VERY HIGH STANDARD, we stick to as we decide which mastiff’s we will breed. WE truly believe its only right to ALWAYS breed for the betterment of the mastiff breed. Each one of our Mastiff’s are health tested and each Happy healthy and Huge STONEHAVEN Mastiff Puppy comes with a written guarantee. And we make a pledge Every mastiff that comes from Stonehaven IS FOR LIFE. We as responsible Mastiff Breeders Believe in Mastiff Rescue.