Breed-specific legislation (BSL) is a law that bans OR restricts certain types of dogs based on their appearance, usually because they are perceived as "dangerous" breeds or types of dogs.
**It is a common misconception that BSL refers only to breed bans. BSL is seen in two forms: bans and restrictions.**
A breed ban usually requires that all dogs of a certain appearance ("targeted breed") be removed from the municipality wherein the ban has been implemented. After the effective date of the ban, dogs in the municipality that are identified as targeted breeds are usually subject to being killed by animal control, though in some cases, such dogs may be saved if relocation is an option. Breed bans may have grandfather clauses that allow dogs of targeted breeds to stay in the ban area (provided they are registered with the municipality by a certain date, and likely subject to various breed-specific restrictions