Arizona Dog Bite Law: One-Bite Rule & Liability

Arizona dog bite law does not follow the one-bite rule. Under A.R.S. § 11-1025, a dog’s owner is liable the first time the dog bites someone, and the victim does not have to prove the owner knew the dog was dangerous. Below, we cover who is liable, the new 2025 owner-information law, and the deadline that catches people off guard.

Here’s the quick version:

• Arizona uses strict liability for dog bites. There is no free first bite.
• Since September 26, 2025, whoever is responsible for a dog that bites must give the victim the owner’s contact information.
• A claim under the bite statute has a one-year deadline. A negligence claim has two years.
• Provocation is the main defense to the statutory claim, and a dog’s breed cannot be considered.

Does Arizona Follow the One-Bite Rule?

No. In Arizona, a dog does not get one free bite. The owner can be liable for the very first bite.

What the One-Bite Rule Means in Other States

In one-bite states, the victim usually must prove the owner knew, or should have known, the dog was dangerous, often through an earlier bite.

Arizona Uses Strict Liability Instead

Strict liability means you don’t have to prove the owner was careless. Under § 11-1025(A), the owner is liable when the dog bites someone in a public place or lawfully on private property, including the owner’s own property, regardless of the dog’s history or what the owner knew.

The Arizona Supreme Court discussed this rule in Massey v. Colaric (1986), noting that Arizona gives dogs no free bite and that assumption of risk, knowingly accepting the danger, is not a defense under the state’s dog statutes.

Where the “One-Bite” Idea Still Shows Up Here

Arizona also allows a separate negligence claim, which does ask whether the owner knew or should have known the dog had an unusually dangerous tendency. It resembles the one-bite approach, but it is a separate claim with its own deadline, not an exception to strict liability. An Arizona dog bite lawyer can tell you whether both claims fit your case.

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How Arizona’s Dog Bite Statute Works (A.R.S. § 11-1025)

Who Can Be Held Liable

The bite claim runs against the dog’s owner. A separate statute, A.R.S. § 11-1020, makes the owner or any person responsible for the dog answerable for injuries caused while the dog is at large. Liability turns on who owned or was responsible for the dog, not who owns the property.

What “Lawfully Present” Means

The statute protects people in public places, like sidewalks and parks, and people lawfully on private property. Under A.R.S. § 11-1026, that includes invited guests and anyone performing a duty imposed by law, such as a mail carrier.

A bite on the owner’s own property still counts, such as when a friend invites you into their backyard.

A Dog’s Breed Doesn’t Change the Analysis

Section 11-1025(C) bars courts, hearing officers, and arbitrators from considering a dog’s actual or perceived breed when deciding whether it is aggressive or vicious, or whether liability exists. A victim gains nothing from a breed’s reputation, and an owner gains nothing by calling the breed gentle.

Bites vs. Other Dog-Caused Injuries

Section 11-1025 covers bites. Being knocked down, scratched, or hurt swerving your bike away from a loose dog falls outside it. Those injuries run through § 11-1020 when the dog was at large, meaning neither enclosed nor leashed, or through an ordinary negligence claim.

A.R.S. § 11-1012 generally requires dogs in public parks and on public school property to be leashed or enclosed, and many cities add their own ordinances. A Chandler dog bite attorney can check which rules applied where you were hurt.

New in 2025: Arizona’s “Bite and Run” Law

What SB 1241 Requires

Senate Bill 1241, signed May 7, 2025, added subsection B to § 11-1025. Since September 26, 2025, anyone who owns or cares for a dog that bites someone must provide the owner’s contact information to the person bitten.

If the Owner Won’t Identify Themselves

Maricopa County describes a violation as a Class 2 misdemeanor, which carries up to four months in jail (A.R.S. § 13-707) and a fine of up to $750 (A.R.S. § 13-802).

If the owner leaves, call police or animal control, photograph the dog and any vehicle or plate, and get witness contacts. Without the owner’s identity, you can’t confirm the dog’s rabies vaccination or find an insurance policy.

How Long Do You Have to File an Arizona Dog Bite Claim?

One Year for the Statutory Strict Liability Claim

A claim under § 11-1025 must be filed within one year of the bite. In Murdock v. Balle (1985), the Arizona Court of Appeals applied the one-year limit for liabilities created by statute, now A.R.S. § 12-541(5). Many people assume Arizona’s general two-year injury deadline applies. For the bite statute, it doesn’t.

Two Years for a Common-Law Negligence Claim

A negligence claim gets two years under A.R.S. § 12-542, but you must prove the owner was at fault. Murdock also confirmed that both claims can be brought together.

	Strict Liability (§ 11-1025)	Negligence
What you prove	A bite in a public place or while lawfully on private property	Owner fault, such as knowing of a dangerous tendency
Deadline	One year	Two years
Your own conduct	Provocation is the defense	Comparative fault can reduce recovery

Children and Government-Owned Dogs

A child’s deadline is paused until age 18 under A.R.S. § 12-502, though a parent can, and usually should, file sooner. If a government agency owns the dog, a written notice of claim is due within 180 days (§ 12-821.01) and the lawsuit within one year (§ 12-821).

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Defenses Dog Owners and Insurers Use

Provocation

Under A.R.S. § 11-1027, proof that the victim provoked the attack is a defense, judged by whether a reasonable person would expect the conduct to provoke a dog. Section 11-1025 defines provocation as tormenting, attacking, or inciting a dog, and the owner carries the burden of proving it. Massey described provocation as the only defense the legislature provided.

Trespassing and Unlawful Presence

A trespasser generally can’t rely on the statute. But an unlatched gate, an unmarked property line, or a child chasing a ball into a yard can raise fact questions.

Police and Military Dogs

Under § 11-1025(D), the strict liability statutes don’t apply when a police or military dog bites while helping apprehend someone reasonably suspected of a crime, investigate a crime, execute a warrant, or defend an officer or another person. That exception doesn’t apply if the victim wasn’t involved in or suspected of the underlying act, or if the agency has no written dog-use policy.

Comparative Fault

Massey reasoned that the dog statutes displaced common-law defenses such as contributory negligence. In a negligence claim, Arizona’s pure comparative fault rule (A.R.S. § 12-2505) reduces recovery by your share of fault without barring it. Here’s more on how Arizona’s comparative negligence rules work.

Who Else Can Be Liable Besides the Dog’s Owner?

Who Counts as an “Owner” Under Arizona Law

A.R.S. § 11-1001(10) defines an owner as anyone who keeps an animal for more than six consecutive days. That can include a long-term sitter, a boarding kennel, or a relative. Someone fostering a dog for an animal shelter is excluded.

Whoever Was Responsible for the Dog That Day

For a dog at large, § 11-1020 reaches whoever was responsible for the dog at the time, such as a friend dog-sitting for the weekend. Someone whose carelessness let the dog out may face a negligence claim. A Phoenix dog bite lawyer can help identify every responsible party.

Landlords and Property Managers

A landlord who doesn’t keep the dog generally isn’t its owner, so a claim usually turns on negligence: what the landlord knew and could do.

What to Do After a Dog Bite in Arizona

1. Get medical care the same day. Bites carry infection and rabies risks, and a same-day record documents the injury.
2. Get the owner’s contact information. Section 11-1025(B) now requires them to provide it.
3. Report the bite. A.R.S. § 11-1014(E) requires anyone with direct knowledge of a bite to report it, usually to Maricopa County Animal Care & Control, though some cities, including Mesa, use local police. In Pinal County, contact Pinal County Animal Care and Control. The dog is then quarantined for at least 10 days.
4. Document everything. Photograph your injuries, the scene, and the dog, and collect witness contacts.
5. Be careful with insurers. Don’t give a recorded statement or accept a quick settlement before your treatment is complete. A Mesa dog bite lawyer can handle those calls.

What Is an Arizona Dog Bite Claim Worth?

Value depends on the injuries. Economic losses can include emergency care, infection treatment, reconstructive surgery, scar revision, physical therapy, and lost income or earning capacity.

Non-economic losses, like facial scarring and the anxiety or post-traumatic stress that can follow an attack, may also be part of a claim. Many people hesitate to claim against a neighbor or relative, but these claims are often paid through the owner’s homeowners or renters insurance, not out of pocket. See our personal injury case results or talk with a Mesa personal injury lawyer.

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Arizona Dog Bite Law FAQs

Does Arizona have a one-bite rule?

No. Owners are strictly liable for a first bite in a public place or where the victim was lawfully on private property (A.R.S. § 11-1025).

How long do I have to file a dog bite claim in Arizona?

One year under the bite statute, two years for negligence, and shorter notice rules if a government agency owns the dog.

Does the dog’s breed affect my case?

No. Section 11-1025(C) bars courts, hearing officers, and arbitrators from considering a dog’s actual or perceived breed.

What if the dog’s owner left before I got their information?

The law now requires them to provide it. Report the bite to animal control or police, and photograph the dog and any vehicle.

What if the dog knocked me down instead of biting me?

The bite statute won’t apply, but you may still have a claim under § 11-1020 (dogs at large) or ordinary negligence.

Talk to Dove Law Firm Before Your Deadline Runs

Arizona dog bite law gives victims strong rights, but the one-year deadline moves fast. Attorney Shawn H. Dove represents dog bite victims across Maricopa and Pinal Counties, including Mesa, Chandler, Gilbert, Tempe, Apache Junction, and Phoenix, from our office at 2650 E Southern Ave, Suite 201, Mesa, AZ 85204.

We’re available 24/7, and you pay nothing until we win your case. Call (480) 213-4489, toll free (877) 368-3529, or schedule a free consultation.