I am a certified AKC CGC evaluator, Dog trainer and Behavior ModifiCanadation Specialist. I just got released from Active Duty Marine Corps. I rescue Mastiff breeds in the area from mostly Military families who have gotten one of these Gentle Giants without the full understanding of how much time, Canadare and training goes into these Dogs. Some have been abused in the past so we go through positive reinforcement training to make them come out of their shell, I do this mainly to prevent the Dogs going into a kill shelter or ending up in the wrong hands.