The Missouri town of Sikeston recently enacted a dangerous dog ordinance which requires owners of dangerous dogs to follow certain regulations, including keeping the dog in a secure enclosure and having liability insurance.
The ordinance defines a dangerous dog by the type of breed of dog, including pit bulls, and dogs having a history of biting hard enough to break the skin.
This kind of ordinance makes a lot of sense in terms of protecting the public, while allowing responsible dog owners to keep the kinds of pets they desire. Pit bulls, perhaps more than any breed, have a history of aggressive behavior, even when unprovoked. Other dogs may be behave aggressively as well, and this ordinance does much to address the threat posed by them.