Wyoming Dog Bite Laws: Liability and Victim Rights

Wyoming has no statewide strict-liability dog bite statute. Under the common law framework the Wyoming Supreme Court set out in Borns ex rel. Gannon v. Voss, victims may pursue three theories: strict liability when the owner knew of the dog's dangerous propensities, common law negligence, or negligence per se based on a leash law violation.

Estimate your claim: Use our free Wyoming Dog Bite Settlement Calculator to see a rough settlement range based on the medical bills, the bite location, the victim's age, and Wyoming's liability rule.

How Wyoming Dog Bite Liability Works

Wyoming does not have a statewide dog bite statute that imposes strict liability on all dog owners. Instead, Wyoming relies on common law principles and a handful of statutes that together form the legal framework for dog bite claims.

The Wyoming Supreme Court established the controlling law in Borns ex rel. Gannon v. Voss, 70 P.3d 262 (Wyo. 2003). In that case, a seven-year-old girl was bitten in the face by a dog at a campsite. The Court identified three distinct legal theories that dog bite victims can use to recover damages.

Those three theories are:

1. Strict liability when the owner kept an animal knowing of its dangerous propensities
2. Common law negligence in the care and control of a domestic animal
3. Negligence per se based on the violation of a duty created by statute or local ordinance (such as a leash law)

This means victims are not limited to the traditional one-bite rule. A victim can pursue a negligence claim without proving the dog had a history of aggression.

The One-Bite Rule in Wyoming

Under the one-bite rule, a dog owner can be held strictly liable only if they knew or reasonably should have known that their dog had dangerous tendencies. The phrase "one free bite" is shorthand for the idea that strict liability does not attach until the owner has knowledge of a dangerous propensity.

However, the Wyoming Supreme Court made clear in Borns v. Voss that a negligence claim does not require proof that the dog was vicious or that the owner knew it was vicious. Requiring the victim to prove the scienter (knowledge) element in a negligence claim would be "contrary to law," according to the Court.

This distinction matters because it gives victims two separate paths to compensation:

• Strict liability path: Prove the owner knew the dog was dangerous. If established, the owner is liable regardless of how careful they were.
• Negligence path: Prove the owner failed to exercise reasonable care in controlling the dog. No prior knowledge of dangerousness is required.

What Victims Must Prove

The elements a dog bite victim must establish depend on which legal theory they pursue.

For a Strict Liability Claim

• The defendant owned or harbored the dog
• The dog had a known dangerous propensity (such as a history of biting, lunging, or aggressive behavior)
• The owner knew or should have known about that propensity
• The dog caused injury to the victim

For a Negligence Claim

• The defendant owed a duty of care to the victim
• The defendant breached that duty by failing to exercise reasonable care in controlling the dog
• The breach caused the victim's injuries
• The victim suffered actual damages

For a Negligence Per Se Claim

• A local ordinance or state statute imposed a specific duty on the dog owner (such as a leash law)
• The owner violated that law
• The violation caused the victim's injury
• The victim is within the class of persons the law was designed to protect

Wyoming's Modified Comparative Fault Rule

Wyoming applies a modified comparative fault system under Wyo. Stat. 1-1-109. This rule directly affects how much a dog bite victim can recover.

Under this system:

• If the victim is 50% or less at fault, they can still recover damages, but the award is reduced by their percentage of fault
• If the victim is 51% or more at fault, they recover nothing

In dog bite cases, a defendant might argue comparative fault if the victim provoked the dog, trespassed on private property, or ignored warning signs. For example, if a jury finds the victim 30% at fault and awards $100,000 in damages, the victim would receive $70,000.

Dog Owner Responsibilities Under Wyoming Law

Wyoming state statutes and local ordinances impose several responsibilities on dog owners.

Rabies Vaccination

Under Wyo. Stat. 11-31-213, county commissioners may require registration of all dogs and cats within a rabies control district. Owners must present a valid rabies vaccination certificate from a licensed veterinarian as a condition for registration. The certificate must show the date of vaccination, the type of vaccine used, and the immunization period.

Local Leash and Confinement Laws

Many Wyoming municipalities require dogs to be leashed in public areas and securely confined on the owner's property. Violating a local leash law can serve as the basis for a negligence per se claim if a dog bite occurs.

Licensing and Registration

Most Wyoming jurisdictions require dogs to be licensed and registered with local authorities. Failure to comply can result in fines and may strengthen a victim's case in a dog bite lawsuit.

Public Nuisance Laws

Under Wyo. Stat. 11-31-301, a board of county commissioners may declare dogs running at large in unincorporated areas a public nuisance. The county sheriff and animal control officers enforce these regulations. Counties may also enact rules regarding dogs running at large, vicious dogs, and dogs that chase wild game or livestock.

Penalties under Section 11-31-301 include fines of up to $50 for a first offense and up to $100 for each subsequent offense.

Dangerous Dog Designations

Wyoming does not have a single statewide dangerous dog statute. Instead, local governments write their own dangerous dog ordinances, and they draw on two separate grants of authority.

A board of county commissioners acts under Wyo. Stat. 11-31-301, which reaches only the unincorporated areas within the county limits. Cities and towns act under Wyo. Stat. 15-1-103(a), which lets a city or town regulate or prohibit the running at large of any animals within the city limits, impose a license fee for keeping or harboring dogs, operate a pound, and declare and abate nuisances.

That split matters when you are checking the rules for a specific address, because a town ordinance and a county regulation come from different sources of power.

Local ordinances typically define a dangerous dog as one that has:

• Bitten or attacked a person without provocation
• Killed or seriously injured a domestic animal
• Been previously designated as potentially dangerous and continued to show threatening behavior

Once a dog receives a dangerous designation, the owner typically must:

• Keep the dog in a secure, locked enclosure that prevents escape
• Muzzle and leash the dog whenever it is outside the enclosure
• Post visible warning signs on the property
• Carry liability insurance of $100,000 or more (in some jurisdictions)
• Register the dog with local authorities and notify them of any sale, transfer, or move

Quarantine After a Bite

Under Wyo. Stat. 11-31-301, any animal that attacks a person in a vicious manner or bites any person may be impounded by the county sheriff or animal control officer and held in quarantine for at least 10 days. The Wyoming state health officer may extend the quarantine period to determine whether the animal carries a communicable disease.

Home quarantine may be allowed if the owner presents a valid rabies vaccination certificate.

Damages Available to Dog Bite Victims

Dog bite victims in Wyoming may recover both economic and non-economic damages.

Economic Damages

• Medical expenses, including emergency treatment, surgery, and rehabilitation
• Future medical costs for ongoing treatment or reconstructive surgery
• Lost wages and lost earning capacity
• Property damage

Non-Economic Damages

• Pain and suffering
• Emotional distress and psychological trauma
• Scarring and disfigurement
• Loss of enjoyment of life

Wyoming does not impose a statutory cap on damages in most personal injury cases, including dog bite claims. The full amount of damages is determined by the jury based on the evidence presented.

Statute of Limitations for Dog Bite Claims

Under Wyo. Stat. 1-3-105, the statute of limitations for personal injury claims in Wyoming is four years from the date of the injury. This deadline applies to dog bite lawsuits.

Important exceptions include:

• Minors: Under Wyoming's general legal-disability tolling statute (Wyo. Stat. 1-3-114), a victim who was a minor when bitten may file within three years after turning 18, or within the standard four-year period from the date of the bite, whichever is longer, not a full four years from age 18
• Government entities: Claims against government agencies or employees may have shorter notice requirements, sometimes as short as two years
• Discovery rule: In rare cases where an injury is not immediately apparent, the clock may start when the victim discovers or reasonably should have discovered the injury

Failing to file within the deadline permanently bars the claim. Victims should consult with an attorney well before the deadline approaches.

Legal Defenses for Dog Owners

Dog owners in Wyoming have several defenses available.

Provocation

If the victim provoked the dog through teasing, hitting, tormenting, or other aggressive behavior, the owner may argue reduced or eliminated liability. The provocation must be sufficient to cause a normally calm dog to react aggressively.

Trespassing

Dog owners generally owe a lower duty of care to trespassers. If the victim was on the owner's property without permission when the bite occurred, the owner's liability may be significantly reduced or eliminated. However, this defense may not fully apply to young children who do not understand property boundaries.

Comparative Fault

As discussed above, Wyoming's modified comparative fault rule under Wyo. Stat. 1-1-109 can reduce or bar a victim's recovery based on their share of fault.

Assumption of Risk

If the victim knowingly accepted the risk of being bitten, such as a veterinarian, dog groomer, or kennel worker handling an unfamiliar animal, this defense may limit or bar recovery.

Landlord Liability for Dog Bites

The Wyoming Supreme Court has taken up this question. In Roberts v. Klinkosh, 986 P.2d 153 (Wyo. 1999), a tenant's social guest sued the tenant's landlord after the guest was bitten by another tenant's dog. As in any Wyoming dog bite claim, what the landlord knew about the animal's dangerous propensities was the central question.

In Wyoming, a landlord may be held liable for a tenant's dog bite when three conditions come together:

1. The landlord knew the tenant's dog was dangerous or had aggressive tendencies
2. The landlord had the authority to remove the dog or require the tenant to remove it
3. The landlord failed to take reasonable action to protect others

Landlords who allow tenants to keep pets should include clear pet policies in lease agreements, require tenants to carry renter's insurance with liability coverage, and act promptly if they learn a tenant's dog poses a danger.

Breed-Specific Legislation in Wyoming

Wyoming does not have a statewide breed-specific law. Individual cities and counties may create their own breed restrictions.

The town of Hudson, Wyoming, has been the most notable example, maintaining restrictions on pit bulls and Rottweilers. However, Hudson and other municipalities have been reconsidering these policies in favor of behavior-based dangerous dog ordinances that focus on a dog's actions rather than its breed.

Before acquiring a dog of any breed in Wyoming, check with your local municipal office or county clerk for current restrictions in your area.

Criminal Penalties for Dog Owners

Wyoming has no dangerous dog crime. Nothing in the state code makes an owner criminally liable, at either the misdemeanor or the felony level, simply because a dog attacked or injured a person. What Wyoming law supplies is a set of fines, plus the general criminal statutes that apply to any person who hurts someone.

Fines Under State and Local Law

Under Wyo. Stat. 11-31-301(c), where a county has declared animals running at large a public nuisance, the county sheriff may arrest or issue a summons to the owner of an animal that is running at large or has attacked a person. A first conviction is punishable by a fine of not more than $50, and each subsequent conviction by a fine of not more than $100.

Under subsection (e), an animal that attacks a person in a vicious manner may be destroyed, or its owner fined not more than $200, or both. Proof that the animal bit or attacked a person at a place where that person was legally entitled to be is evidence that the animal is vicious.

Violating a city or town ordinance, such as a leash requirement or the confinement conditions attached to a dangerous dog designation, carries whatever penalty that local ordinance sets.

When General Criminal Charges Apply

Because there is no dog-specific offense, a severe case is charged, if at all, under a statute that applies to everyone. Wyoming's aggravated assault and battery statute, Wyo. Stat. 6-2-502, is a felony and covers a person who intentionally, knowingly, or recklessly causes serious bodily injury to another under circumstances manifesting extreme indifference to the value of human life. That is the kind of charge a prosecutor would weigh against someone who deliberately used a dog to injure another person.

Charges like these turn on the owner's own conduct and state of mind rather than on the dog, and the decision to file them rests with the prosecuting attorney.

How to File a Dog Bite Claim in Wyoming

If you are bitten by a dog in Wyoming, take these steps to protect your legal rights:

• Get medical treatment immediately. Keep all medical records and receipts.
• Report the incident to local animal control and law enforcement. This creates an official record.
• Document the scene and your injuries. Take photographs of the bite wounds, the location, and the dog if possible.
• Collect the owner's information, including their name, address, phone number, and homeowner's or renter's insurance details.
• Identify witnesses and get their contact information.
• Preserve physical evidence such as torn clothing or other items damaged in the attack.
• Consult a personal injury attorney. Many dog bite lawyers offer free consultations and work on a contingency fee basis.

More Wyoming Laws

• Wyoming Slip and Fall Laws
• Wyoming Statute of Limitations