In Florida, a person is civilly liable for damages caused his or her dog.
In addition to civil damages, the dog owner may be prosecuted criminally for a dog bite as well. If the dog previously was declared dangerous and the dog attacks again without provocation, Florida Statutes provide that the dog owner is guilty of a misdemeanor of the first degree. Dogs should be properly fenced or leashed to prevent dog bites. You can read more about the Florida Statutes involving this crime at Section 767.13 at the Official Florida Statute / Florida Leglislature Web Site.