Some states have statewide dog leash laws. These laws are referred to as "running at large statutes." Many states do not have statewide leash laws, but counties, cities, towns, and municipalities have laws that determine when a dog must be leashed and not "running at large." These leash laws sometimes require dogs to be registered and wear an identification tag.
In California, there is no statewide leash law, but the state's Food and Agricultural Code Section 30801 requires that dogs are not allowed to run at large and must be controlled by a leash, chain, or be in a vehicle or secured by a fence. Local governments in California have the authority to establish their own leash laws, which can vary widely from one jurisdiction to another. These local ordinances often specify when and where dogs must be leashed, such as in public parks or on sidewalks, and may also require dogs to be registered with the local animal control agency and to wear identification tags. Dog owners in California should check the specific leash laws in their city or county to ensure compliance with local regulations.