Last Updated on April 20, 2023 The Pitbull Mastiff Mix is a crossbreed between the Mastiff and the Pitbull, also known as Pit Mastiff or American Masti-Bull. It’s characterized as medium to large in size, measuring 25 to 29 inches (64 to 74 cm) tall and weighing around 100 to 140 pounds (45 to 64 … Continue reading All You Need to Know about the Powerful Pitbull Mastiff Mix