This is a controversial issue. There are some who believe quite strongly that certain breeds have innate traits of aggression that make them more likely to inflict harm on human beings than other types of breeds. Opponents of this view state that a dog's propensity for aggressive behavior is dictated primarily by the dog's owner or handler and how that dog was trained and cared for early in its life.
On the one hand, there are certain breeds that appear to have a higher incident rate of inflicting harm on people, including children. According to Merritt Clifton, editor of the newspaper publication Animal People, the breeds of pit bull terriers, Rottweilers, Presa Canarios and their mixes accounted for 74 percent of reported attacks from 1982 through 2005. Sixty-eight percent of those attacks involved children. Following these breeds, the next group representing the highest occurrence of attacks included German shepherds, chows, and Akitas. But the question remains whether these breeds were responsible because of some innate characteristic associated with the animal or because they were more likely to be groomed and trained by their owners to act in an aggressive manner.
Breed-Specific Legislation: aka Breed Ban Laws
A hot topic these days is the issue of breed-specific legislation, or sometimes called "breed ban laws." There are some cities in various states that have enacted specific legislation against certain breeds. They include cities in the states of California, Colorado, and Ohio. In Washington, the city of Yakima has adopted an ordinance that completely bans the ownership of pit bulls and their mixes, wolf-hybrids, and others. I am also aware that the city of Seattle has informally considered the issue, but the city council has so far refused to address the topic formally due to the lack of consensus among experts and/or council members.
In 1987, the city of Yakima adopted an ordinance that banned dogs known to be pit bulls, and specifically included those breeds which included the bull terrier, American pit bull terrier, Staffordshire bull terrier, American Staffordshire terrier, and those dogs having any identifiable pit bull variety as an element of their breeding. The new ordinance was in response to three vicious attacks by pit bull dogs on unsuspecting citizens in Yakima. Our Washington State Supreme Court ultimately upheld this ordinance as constitutional, despite the law's effect of also banning those pit bull dogs deemed safe.
Christopher M. Davis is a Seattle attorney focusing personal injury cases. He is also known for his work representing dog bite victims and has written the the book 'When The Dog Bites' as a resource for persons injured in a dog attack.