The One-Bite Rule: Which States Still Follow It
Last updated: August 2026. Reviewed by the Dog Bite Laws legal team.
Thirteen states still follow the pure one-bite rule: Alaska, Arkansas, Idaho, Kansas, Mississippi, Nevada, New Mexico, North Dakota, South Dakota, Texas, Vermont, Virginia, and Wyoming. In these states a dog bite victim must prove the owner knew, or should have known, that the dog was dangerous before the attack.
Thirteen more states apply the one-bite rule partially. In Alabama, Colorado, Georgia, Indiana, Maryland, Montana, New York, North Carolina, Oregon, Pennsylvania, Rhode Island, Tennessee, and West Virginia, a statute covers some victims, some injuries, or some categories of damages, and the one-bite rule governs everything else.
The remaining 25 jurisdictions impose strict liability, meaning the owner is responsible for a bite whether or not the dog had ever shown aggression.
Why published lists of one-bite states disagree
No statute anywhere uses the phrase “one-bite state.” It is a label lawyers apply to a common-law rule, not a legal category with a fixed membership. Every published count is therefore a judgment call, which is why you will see figures ranging from about 10 to 16.
Every state and D.C. falls into one of three categories:
| Rule | Jurisdictions | What it means for a bite victim |
|---|---|---|
| One-bite rule | 13 | There is no dog bite statute. The victim must prove the owner knew, or should have known, that the dog was dangerous. Prior bites, growling, complaints, or muzzle use can all establish that knowledge. |
| Mixed / limited | 13 | A statute exists but reaches only certain victims, certain injuries, or certain categories of damages. The one-bite rule still governs everything the statute leaves out. |
| Trách nhiệm tuyệt đối | 25 (includes D.C.) | The owner is liable for a bite whether or not the dog had ever shown aggression. Most of these statutes make the dog’s history expressly irrelevant. |
The disagreement is entirely about the middle row. Count only the first row and you get 13. Count the first two together and you get 26. Published lists of 14, 15, or 16 fall in between, adding a few mixed states whose statutes are narrow enough that most victims still have to prove the owner knew, most often Georgia, Maryland, and North Carolina.
We use the strict definition on this page: 13 true one-bite states, with the other 13 labeled mixed, because that is the line that changes what a victim actually has to prove.
Why the label matters less than the statute
Pennsylvania shows why the count is the wrong thing to focus on. A bite victim there can recover medical costs without proving anything about the dog’s history, but needs proof that the owner knew the dog was dangerous in order to recover for pain and suffering.
Calling Pennsylvania a one-bite state or a strict liability state tells you almost nothing. What matters is which damages you are seeking and what the statute requires for each. The table below gives the governing law for every state and D.C., so you can see exactly where you stand rather than relying on a label.
Dog bite liability in all 50 states and D.C.
| Tiểu bang | Rule | Governing law | What it means |
|---|---|---|---|
| Alabama | Mixed / limited | Điều 3-6-1 của Bộ luật Alabama | Statute covers bites on the owner’s premises, but full damages require proof the owner knew the dog was dangerous. |
| Alaska | One-bite rule | Common law (no bite statute) | Victim must prove the owner knew or should have known of the dog’s dangerous propensity. |
| Arizona | Trách nhiệm tuyệt đối | A.R.S. § 11-1025 | Owner is liable for any bite in a public place or lawfully on private property, prior history irrelevant. |
| Arkansas | One-bite rule | Common law (no bite statute) | Liability turns on the owner’s prior knowledge of dangerous propensity. |
| California | Trách nhiệm tuyệt đối | Điều 3342, Bộ luật Dân sự California | Liability attaches “regardless of the former viciousness of the dog or the owner’s knowledge.” |
| Colorado | Mixed / limited | C.R.S. § 13-21-124 | Strict liability applies only to serious bodily injury or death, and only for economic damages. |
| Connecticut | Trách nhiệm tuyệt đối | Conn. Gen. Stat. § 22-357 | Owner or keeper is liable for damage to body or property, absent trespass or teasing. |
| Delaware | Trách nhiệm tuyệt đối | 16 Del. C. § 3053F | Owner is liable regardless of prior viciousness or knowledge. |
| Quận Columbia | Trách nhiệm tuyệt đối | D.C. Code § 8-1808(b) | Owner is liable where the dog runs at large or the owner fails to control it. |
| Florida | Trách nhiệm tuyệt đối | Fla. Stat. § 767.04 | Owner is liable for bites regardless of the dog’s former viciousness. |
| Georgia | Mixed / limited | O.C.G.A. § 51-2-7 | Requires either a vicious propensity the owner knew of, or violation of a leash or at-large ordinance. |
| Hawaii | Trách nhiệm tuyệt đối | Haw. Rev. Stat. § 663-9 | Owner is liable without regard to prior knowledge. |
| Idaho | One-bite rule | Common law (no statewide bite statute) | Scienter is required; some cities impose stricter local rules. |
| Illinois | Trách nhiệm tuyệt đối | 510 ILCS 5/16 (Animal Control Act) | No prior-knowledge element. Liability requires only an unprovoked attack on someone lawfully present. |
| Indiana | Mixed / limited | Ind. Code § 15-20-1-3 | Strict liability only for people performing a duty imposed by law; everyone else must prove scienter. |
| Iowa | Trách nhiệm tuyệt đối | Iowa Code § 351.28 | Owner is liable for all damages unless the victim was unlawfully committing a public offense. |
| Kansas | One-bite rule | Common law (no bite statute) | Recovery depends on proving the owner’s knowledge of dangerous propensity or negligence. |
| Kentucky | Trách nhiệm tuyệt đối | KRS § 258.235(4) | Any owner is liable for damage caused by the dog. |
| Louisiana | Trách nhiệm tuyệt đối | La. Civ. Code art. 2321 | Owner is strictly liable for dog-caused injury that could have been prevented. |
| Maine | Trách nhiệm tuyệt đối | 7 M.R.S. § 3961 | Owner is liable for damages when the dog injures someone not trespassing. |
| Maryland | Mixed / limited | Md. Cts. & Jud. Proc. § 3-1901 | Creates a rebuttable presumption the owner knew the dog was dangerous, which the owner may disprove. |
| Massachusetts | Trách nhiệm tuyệt đối | M.G.L. c. 140 § 155 | Owner is liable unless the victim was trespassing, teasing, tormenting, or abusing the dog. |
| Michigan | Trách nhiệm tuyệt đối | MCL § 287.351 | Owner is liable for bites regardless of the dog’s former viciousness. |
| Minnesota | Trách nhiệm tuyệt đối | Minn. Stat. § 347.22 | Owner is liable in full to anyone attacked while acting peaceably in a lawful place. |
| Mississippi | One-bite rule | Common law (no bite statute) | Victim must show the owner knew of the dog’s dangerous propensity. |
| Missouri | Trách nhiệm tuyệt đối | Điều 273.036 của Bộ luật Sửa đổi bang Missouri | Owner is strictly liable regardless of prior knowledge. |
| Montana | Mixed / limited | Mont. Code § 27-1-715 | Strict liability applies only to bites inside an incorporated city or town. |
| Nebraska | Trách nhiệm tuyệt đối | Điều 54-601 của Bộ luật Sửa đổi bang Nebraska | Owner is liable for injury the dog causes, with narrow exceptions. |
| Nevada | One-bite rule | Common law (no bite statute) | Liability requires proof of the owner’s knowledge or negligence. |
| New Hampshire | Trách nhiệm tuyệt đối | N.H. RSA § 466:19 | Owner is liable for any damage the dog causes. |
| New Jersey | Trách nhiệm tuyệt đối | N.J.S.A. § 4:19-16 | Owner is liable regardless of former viciousness or knowledge of it. |
| New Mexico | One-bite rule | Common law (no bite statute) | Scienter is required; the owner’s knowledge of dangerous propensity controls. |
| New York | Mixed / limited | Agric. & Mkts. Law § 121 | Strict liability covers medical costs where the dog is “dangerous”; other damages require scienter. |
| Bắc Carolina | Mixed / limited | N.C.G.S. § 67-4.4 | Strict liability applies to dogs legally declared “dangerous”; otherwise common-law scienter governs. |
| Bắc Dakota | One-bite rule | Common law (no bite statute) | Liability depends on the owner’s prior knowledge or negligence. |
| Ohio | Trách nhiệm tuyệt đối | O.R.C. § 955.28 | Owner, keeper, or harborer is liable for injury the dog causes. |
| Oklahoma | Trách nhiệm tuyệt đối | Okla. Stat. tit. 4 § 42.1 | Owner is liable where the victim was lawfully present and did not provoke the dog. |
| Oregon | Mixed / limited | ORS § 31.360; ORS § 609.140 | Economic damages are recoverable without scienter; non-economic damages require it. |
| Pennsylvania | Mixed / limited | 3 P.S. § 459-502 | Medical costs are recoverable without scienter; full damages require proof of vicious propensity. |
| Rhode Island | Mixed / limited | Luật Tổng quát của Bang Rhode Island, Điều 4-13-16 | Strict liability applies when the dog is outside its enclosure. |
| Nam Carolina | Trách nhiệm tuyệt đối | S.C. Code § 47-3-110 | Owner is liable regardless of the dog’s history. |
| Nam Dakota | One-bite rule | Common law (no bite statute) | Recovery depends on scienter or negligence. |
| Tennessee | Mixed / limited | Tenn. Code § 44-8-413 | Strict liability for dogs running at large; the “residential exception” requires scienter on the owner’s own property. |
| Texas | One-bite rule | Marshall v. Ranne, 511 S.W.2d 255 (Tex. 1974) | No dog bite statute. Texas applies the common-law scienter rule, or ordinary negligence. |
| Utah | Trách nhiệm tuyệt đối | Utah Code § 18-1-1 | Owner is liable for injury regardless of prior knowledge. |
| Vermont | One-bite rule | Common law (no bite statute) | Victim must prove the owner knew of the dog’s dangerous propensity. |
| Virginia | One-bite rule | Common law (no bite statute) | Scienter or negligence must be proven; leash-law violations can supply negligence. |
| Washington | Trách nhiệm tuyệt đối | RCW § 16.08.040 | Owner is liable regardless of former viciousness or knowledge of it. |
| Tây Virginia | Mixed / limited | Bộ luật Tây Virginia, Điều 19-20-13 | Strict liability applies to dogs permitted to run at large; otherwise scienter is required. |
| Wisconsin | Trách nhiệm tuyệt đối | Wis. Stat. § 174.02 | Owner is strictly liable; damages double where the owner had notice of a prior injury. |
| Wyoming | One-bite rule | Common law (no bite statute) | Liability requires proof of the owner’s knowledge or negligence. |
State names link to our detailed guide for that state. Statutes change. This table reflects the law as of August 2026 and is general information, not legal advice. Confirm the current statute for your state before relying on it.
One-bite rule vs. strict liability: the practical difference
| One-bite rule | Trách nhiệm tuyệt đối | |
|---|---|---|
| What the victim must prove | The owner knew or should have known the dog was dangerous | That the bite happened and the victim was lawfully present |
| Does the dog’s history matter? | Yes. It is the central issue. | No. Most statutes make it expressly irrelevant. |
| Typical evidence | Prior bites, prior complaints, warning signs, breed restrictions in a lease, animal control history, neighbor testimony | Medical records, the location of the bite, proof of ownership |
| Common defenses | No knowledge of any dangerous propensity; provocation; trespass | Provocation; trespass; statutory exemptions such as police or military dogs |
| Difficulty for the victim | Higher. The case can fail on the knowledge element alone. | Lower. Liability is usually established once the bite is proven. |
The one-bite rule does not give a dog one free bite
The nickname “one free bite” is the most persistent misconception in this area of law, and it is wrong in both directions.
It is wrong for victims, who often assume a first-time bite is not compensable. It is not the bite that matters; it is the owner’s knowledge. A dog that has lunged at joggers, been muzzled on the vet’s instruction, snapped at children, or prompted a neighbor complaint has already put its owner on notice. Any of those can satisfy the knowledge element without a single prior bite.
It is also wrong for owners, who sometimes believe the first incident carries no exposure. Even in a one-bite state, an owner can be liable in ordinary negligence for violating a leash ordinance, failing to secure a gate, or letting a dog loose near a playground, with no prior history required.
Put plainly: the one-bite rule is a rule about notice, not a coupon.
How to prove a one-bite case
In a one-bite state, the case is usually won or lost on the knowledge element. The evidence that establishes it most often includes:
- Animal control and police records for prior incidents involving the same dog
- Prior complaints from neighbors, delivery drivers, or a homeowners association
- Veterinary records noting aggression, muzzle requirements, or behavioral referrals
- “Beware of Dog” signage, which courts have treated as an admission the owner knew of the risk
- Physical precautions such as a reinforced enclosure, a chain, or a shock collar
- Lease or insurance documents restricting the breed or disclosing a bite history
- Social media posts in which the owner jokes about or describes the dog’s aggression
Because animal control files and veterinary records are routinely purged, and because most states run a two-year personal injury deadline, the evidence in a one-bite case tends to degrade quickly. Breed history can matter too; see our research on the most dangerous dog breeds.
Exceptions that override the one-bite rule
Even in a one-bite state, several circumstances can remove the knowledge requirement entirely:
- Dangerous dog designations. Once a dog is legally declared dangerous or vicious, knowledge is established as a matter of law and strict rules apply.
- Leash and at-large ordinances. Violating one is negligence per se in many jurisdictions, which supplies fault without any proof about the dog.
- Statutory victim classes. Indiana, for example, imposes strict liability when the victim was performing a duty imposed by law, such as a postal carrier.
- Local ordinances. Cities in one-bite states frequently impose stricter liability than the state common law does.
- Landlord liability. A landlord who knew of a dangerous dog and had the power to remove it can be liable separately from the owner.
One-bite rule by state: quick answers
We maintain detailed pages on the states where this question comes up most:
- Is Texas a one-bite state? Yes, and it is the largest state that still applies the rule.
- Does California have a one-bite law? No. California is a strict liability state.
- Does Illinois have a one-bite law? No. The Animal Control Act replaced it.
- Does Indiana follow the one-bite rule? Partially, depending on who was bitten.
For the full statute, filing deadline, and damages rules in your state, see our state-by-state dog bite law guides. If you are trying to value a claim, start with average dog bite settlement amounts.
Frequently asked questions
Thirteen states apply the pure one-bite rule: Alaska, Arkansas, Idaho, Kansas, Mississippi, Nevada, New Mexico, North Dakota, South Dakota, Texas, Vermont, Virginia, and Wyoming. Thirteen additional states apply it partially alongside a limited statute, which is why published counts range from 10 to 16.
The one-bite rule is a common-law doctrine holding a dog owner liable for a bite only if the owner knew, or should have known, that the dog was dangerous. It is a rule about the owner's notice of risk, not a rule that excuses the first bite.
No. The rule asks whether the owner had notice that the dog was dangerous, and prior growling, lunging, snapping, muzzle use, or neighbor complaints can establish that notice without any earlier bite. An owner can also be liable in ordinary negligence for a first bite, for example by violating a leash law.
Yes. Texas has no dog bite statute and follows the common-law scienter rule adopted in Marshall v. Ranne, 511 S.W.2d 255 (Tex. 1974). A Texas victim can also pursue an ordinary negligence claim, which does not require proof of the dog's history.
No. California Civil Code section 3342 imposes strict liability on dog owners for bites, expressly regardless of the dog's former viciousness or the owner's knowledge of it.
Under the one-bite rule the victim must prove the owner knew the dog was dangerous. Under strict liability the victim only needs to prove the bite occurred while they were lawfully present and did not provoke the dog. The dog's history is central in the first and generally irrelevant in the second.
Yes. Beyond the one-bite theory, most one-bite states allow an ordinary negligence claim based on conduct such as violating a leash ordinance, failing to secure an enclosure, or letting a dog loose in a public area. Local ordinances and dangerous dog designations can also impose liability regardless of prior history.
Talk to a dog bite lawyer
Whether your claim is governed by the one-bite rule or a strict liability statute changes what you have to prove, what evidence matters, and how quickly you need to act. If you were bitten, a dog bite attorney can identify the controlling rule in your state and preserve the animal control and veterinary records that one-bite cases depend on.
Contact Dog Bite Laws for a free case review.
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