A couple of blogs report that a Florida attorney sent notice to Miami-Dade's Animal Service Attorney questioning the constitutionality of Miami-Dade's ordinance banning pit bulls. The KC Dog Blog posts here and the Animal Law Coalition reports here. The Animal Law Coalition notes that the ban was previously upheld by the federal court in American Dog Owners Ass'n v. Dade County, 728 F. Supp. 1533 (S.D. FL 1989).