We decided after spending time with the puppy that we are going to name him Rocco. We took Rocco to the vet and he received a perfect bill of health. He checked his hips, knees, lungs, heart, stool and probably other things that I wasn't even aware of. It turns out my vet's favorite ever dog was a mastiff. He was so enthused and happy for us and talked our ears off regarding his experience with Mastiffs and how much joy we'll get from him. I've attached a copy of the paperwork we received from the vet.