title: Are laws prohibiting ownership of pit bull-type dogs legally enforceable?
authors.affiliation: Swartz, Campbell, and Detweiler, Philadelphia, PA 19103-2316, USA.
authors.forename: M
authors.initials: M
authors.lastname: Wapner
authors.forename: J F
authors.initials: JF
authors.lastname: Wilson
mesh_terms: D000818:Animals; D000829:Animals, Domestic; D001733:Bites and Stings / Q000191:economics / Q000517:prevention & control; D004285:Dogs; D007886:Legislation, Veterinary; D016365:Liability, Legal; D008404:Massachusetts; D010067:Ownership / Q000331:legislation & jurisprudence*; D014861:Washington