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

This is a general summary of Washington state law about dogs. It is information, not legal advice. Reviewed November 2026.

Leashes and licensing

Washington has no statewide leash law and no statewide dog licence. Leash, at-large, licence and number-of-dogs rules come from cities and counties, and they vary a great deal. State law does make a dog's owner liable to the owner of any animal the dog kills or injures.

Rabies vaccination

A state health department rule requires the owner of a dog, cat or ferret to have it vaccinated and revaccinated against rabies, following the instructions of the veterinarian and the licensed vaccine manufacturer. The rule does not apply to animal shelters. Many local health districts also have their own rabies and bite-quarantine requirements, so check yours.

Dangerous dogs and bites

Washington's bite statute is strict liability. The owner of a dog that bites a person who is in a public place, or lawfully on private property including the owner's, is liable for the damages the person suffers, regardless of the dog's former viciousness and regardless of what the owner knew about it. Proof that the injured person provoked the attack is a complete defense.

The state also defines "potentially dangerous" and "dangerous" dogs. A potentially dangerous dog is one that, unprovoked, bites a human or domestic animal, or menaces people on public ground, and local ordinances regulate those dogs. A dangerous dog is one that, unprovoked, severely injures a person, kills a domestic animal off the owner's property, or bites again after being found potentially dangerous. The owner must register the dog with animal control, keep it in a proper enclosure with warning signs, carry a $250,000 surety bond or liability policy, and keep it muzzled and on a substantial leash when outside the enclosure. If a dangerous dog of an owner with a prior conviction attacks or bites a person or domestic animal, the owner commits a class C felony.

Breed-specific rules

A city or county may not prohibit possession of a dog because of its breed, impose breed-specific requirements, or declare a dog dangerous based on its breed, unless it keeps a reasonable process that exempts any dog passing the American Kennel Club Canine Good Citizen test or an equivalent behavior test for at least two years, with a chance to retest.

Tethering and hot cars

A dog restrained outside by a tether may be restrained only for a period that is not reckless. The tether must not let the dog become frequently entangled. A dog must not be tethered if it is ill, injured, in advanced pregnancy or under six months old, must have clean water and safe shelter, and cannot be tethered by a choke, pinch, slip, halter or prong collar. Leaving an animal unattended in a motor vehicle or enclosed space where heat, cold, poor ventilation or lack of water could harm it is a class 2 civil infraction, and animal control or police may enter by reasonable means to remove it without liability for the property damage. Intentionally inflicting substantial pain on an animal, causing it physical injury or killing it by a means causing undue suffering is first-degree animal cruelty, a class C felony.

Where to check your local rule

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