Based on hysterical reporting from idiot reporters who write stories long on sensationalism, and short on fact. Plus they rarely report non pit attacks.
There is a good reason "they rarely report non pit attacks"...
Most non pit bull attacks do not end up with someone being maimed, losing a limb or ending up in the morgue.
Banning pit bulls saves lives and protects the innocent
Most dogs bite and retreat, but pit bulls have a hold-and-shake bite style, and tenaciously refuse to stop an attack once begun.
Often a pit bull releases its grip only when dead — the trait dog fighters describe as being "dead game."
Ban opponents often blame dismembering and fatal attacks on environmental factors, such as neglect. That, unfortunately, is the plight of too many dogs of all breeds, not just those who kill and maim.
Opponents also fail to distinguish dog-bite-injury severity. They argue that bans "do not reduce all dog bites." Of the 4.7 million Americans bitten by dogs each year, 9,500 require hospitalization for severe dog-bite injuries. The most extreme injury level, mauling injury, requires life-saving procedures at trauma centers.
The purpose of a pit bull ban is to eradicate mauling injuries and deaths inflicted by pit bulls, the breed involved in more than half of all severe and mauling attacks.
Since 1986, 18 appellate decisions have upheld lower-court findings that pit bulls are more dangerous than other dog breeds.
Since 1988, four peer-reviewed studies published in leading
medical journals
have reviewed the severity of pit bull injury. "Mortality, Mauling and Maiming by Vicious Dogs," published in the Annals of Surgery in 2011, concluded the following:
"Attacks by pit bulls are associated with higher morbidity rates, higher
hospital
charges, and a higher risk of death than are attacks by other breeds of dogs. Strict regulation of pit bulls may substantially reduce the U.S. mortality rates related to dog bites."
The Front Burner: Should pit bulls be banned?