7. Wolf Hybrid
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This breed is extremely unpredictable and skittish. Breeding a wild animal and a domesticated one is fraught with danger. Many states have taken measures to prevent the ownership of a wolf-hybrid by making it illegal. The CDC reported that between 1979 and 1998, 14 Americans died from wolf hybrids.
8. Boxer
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Boxers are descendants of hunting dogs and were used in WWI as guard and attack dogs. Boxers are the perfect choice for families looking to create a safe environment. They are strong and possess powerful bites. In 2013, a boxer was responsible for a fatality in Arizona on December 28, 2013. The boxer bit its owner as he tried to stop a fight between one of his dogs and his boxer.