Arizona dog laws: leash, licensing, bites and breed rules

Arizona's dog statutes are built around counties: they run licensing, rabies control and the pound. Cities and towns may adopt their own rules, and many do. This summary is general information about state law and is not legal advice. Reviewed November 2026.

Leashes and licensing

The state does not require every dog to be on a leash at all times. It does say that a vicious dog, and a female dog during her breeding season, must not be permitted at large, and that no dog may be in a public park or on public school property unless it is on a leash or otherwise physically restrained or enclosed. Inside a county rabies quarantine area, dogs must be confined to the owner's property or on a leash of no more than six feet. A dog over three months old that is running at large must wear a collar or harness with a valid licence tag.

Each county board of supervisors may set a licence fee for dogs aged three months or older, and licensed dogs wear a tag on a collar or harness.

Rabies vaccination

A dog cannot be licensed unless it has been vaccinated against rabies, and the owner or veterinarian must present a vaccination certificate. When an unvaccinated dog bites a person, it is quarantined for at least ten days, starting on the day of the bite, at the county pound or at a veterinary hospital at the owner's expense. A vaccinated dog that bites may be quarantined at home if the county enforcement agent agrees.

Dangerous dogs and bites

Arizona law holds the owner of a dog that bites a person strictly responsible for the damages, whether the person was in a public place or lawfully on private property, including the owner's own. It does not matter whether the dog was ever vicious before or whether the owner knew. Provocation, such as tormenting or inciting the dog, is a defense.

A "vicious" dog is one with a propensity to attack or endanger people without provocation, or one found so after a hearing. A justice of the peace or city magistrate can hold a hearing and may order a dog found vicious to be forfeited to a shelter or rescue or humanely euthanized. The owner of an "aggressive" dog, meaning one that has bitten a person or domestic animal without provocation, must take reasonable care to keep it from escaping and to control it off the property. Failing to control it off the property is a class 1 misdemeanor, and failing to prevent its escape is a class 3 misdemeanor.

Breed-specific rules

State law says breed, whether actual or perceived, may not be considered in determining whether a dog is aggressive or vicious or whether liability exists. A county may contract with a city to enforce its dog ordinances only if they are not specific to any breed.

Tethering and hot cars

Arizona has no statewide tethering law. Intentionally, knowingly or recklessly leaving an animal unattended and confined in a motor vehicle where injury or death is likely to result is a class 1 misdemeanor, and officers and animal control agents may use reasonable force to open the vehicle. A private person who forces entry into a locked car to remove a confined pet is protected from civil liability only if all the statute's conditions are met, including a good-faith belief of imminent danger, calling authorities first, using no more force than necessary and staying until they arrive.

Where to check your local rule

Cities, towns and counties often have stricter leash, licence, number-of-dogs and breed rules than the state. Check your city or county animal control website or ordinance code. If your dog has bitten someone or has been reported, talk to a lawyer or the animal-control office.