Pennsylvania has a new law that limits the types of surgical procedures that can be performed on dogs and imposes tougher penalties on people who steal dogs for fighting.

Gov. Ed Rendell signed a bill Thursday that establishes penalties for dog owners and breeders who crop ears, cut vocal cords or perform surgical births. It also generally bans docking tails or removing dewclaws from dogs more than five days old.

Owners have to maintain records that show licensed veterinarians performed such procedures.