Mary Tully October 31, 2016 Live Training, How to Train, Dog of the Week, Q&A Pitbull History: Are Pitbulls More Dangerous Than Other Dog Breeds? [Video] Mary Tully October 31, 2016 Live Training, How to Train, Dog of the Week, Q&A Mary Tully shares a brief history of the Pitbull: where they came from, and what they were used for. She also talks about the future of Pitbulls in America and what is true and false about this misunderstood dog breed.