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34 U.S. dog bite-related fatalities occurred in 2015. Despite being regulated in Military Housing areas and over 700 U.S. cities, pit bulls contributed to 82% (28) of these deaths. Pit bulls make up about 6.6% of the total U.S. dog population.

Together, pit bulls (28) and rottweilers (3), the second most lethal dog breed, accounted for 91% of the total recorded deaths in 2015. This same combination also accounted for 76% of all fatal attacks during the 11-year period of 2005 to 2015.

The breakdown between these two breeds is substantial over this 11-year period. From 2005 to 2015, pit bulls killed 232 Americans, about one citizen every 17 days, versus rottweilers, which killed 41, about one citizen every 98 days.