Bullmastiff
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Combine the fact that bullmastiffs are not very aware of their large size and that they are more aggressive than other breeds, it makes sense that parents with young children would be concerned. But, like all dogs, with proper training, this breed can be your family's best friend. They show increased loyalty to their owners, often viewing them as the leader of the pack, so be sure to avoid showing signs of weakness around your bullmastiff.
