Chopo is a christomathic representative of his breed. While the Bullmastiff is a massive, powerfully built dog, it is not cumbersome. He is young, in human terms, a teenager. His character is still forming. Open an encyclopedia and read about the Bullmastiff, it's all Chopo. He is very active now, but as he gets older he will be calm and quiet. He is loyal to children although because of his size, he may accidentally knock over or step on a toddler. If you have small children, always supervise them with the dog. Teach your children not to pull the dog’s tail, and to stay away from the dog when eating. He needs a strong personality by his side, proper training, good walking, attention, love, and patience. When trained, he'll be a wonderful, caring, loyal companion who’ll gladly risk his life to defend yours.