Bullmastiffs
Bullmastiffs are not recommended for families with children. Young bullmastiffs (up to about three years old) can be bulls in a china shop. When bullmastiffs romp and jump, they do so with great vigor, and things can go flying, including people.
In addition, bullmastiffs may try to protect their own children from other children, which could lead to tragedy if kids are simply roughhousing and your bullmastiffs decide to stop it.
