Bullmastiff
This breed behaves as if it were a small creature, however it has aggressive instincts. They are trainable and can be your child’s best friend because their loyalty is enhanced to a whole new degree, but only once your child has gained control over them. Bullmastiffs regard their owners as leaders, thus dominance is essential.
Saint Bernard
Saint Bernard dogs are recognized as one of the largest and sweetest dog breeds, yet they can also be dangerous around children due to their playfulness and proclivity to knock things over virtually every time. So, before you commit to this beast, make sure you have enough space for both your Saint Bernard and your kids.