Bullmastiff
What do you get if you cross a Boxer with a Great Dane? The Bullmastiff. The Bullmastiff is a large dog with imposing features. The male bullmastiffs are the most dangerous, even though the breed is generally very dangerous. If you are lucky enough to have a male Bullmastiff, they can weigh up to 130 lbs. It is important that you train your dog to be obedient. Bullmastiffs, like Boxers, are natural guard dogs. You can expect them be aggressive. In 2014, there were 2 Bullmastiff attacks against humans. One of them killed a boy aged 13 in New Jersey.