Pit bulls make up 6 percent of the dog population in Canada and the US, but they are responsible for 68 percent of dog attacks and 52 percent of dog-related deaths from 1982 to 2009, TIME Magazine reported.
So, how does Boston stack up?
According to data provided to Boston.com from Mayor Marty Walsh’s press office, there were a total of 661 dog bites in the city of Boston between January 2012 and June 2014, which included bites against animal, human and unknown victims.
Of these 661 bites, 150 were caused by pit bulls and 30 from pit bull mixes, making over one-fourth of the bites coming from pit bull breeds.
Pit bulls make up a little over 3 percent of the entire dog population of Boston. There are 250 registered pit bulls, pit bull mixes and Staffordshires listed as registered in the 2014 list of dog licenses, as provided to Boston.com, with a total of 7,355 registered dogs in the city.