Whether cities should enact breed-specific legislation (BSL, or "pit bill bans") for dogs such as mastiffs is widely debated. Some see BSL as a humane way of making communities safer by discouraging dog fighting and the breeding of dangerous dogs. Others argue there is no evidence that BSL makes communities safer and that other legislation would be more effective than expensive and controversial BSL laws. For more on the debate on pit bull bans, visit ProCon.org.