Colorado Personal Injury Lawyer Blog
A serious dog attack in Arvada in July 2026 serves as a reminder that a dog bite can become a medical emergency and a complicated legal matter within a matter of seconds.
According to the Arvada Police Department, officers responded at approximately 3:15 a.m. on July 26, 2026, after a large gray-and-white pit bull reportedly bit at least one person at the residence where the dog lived. Police said one person suffered serious injuries, and the dog’s owner was among the people who were injured and treated at a local hospital. The dog then escaped from the residence.
Police issued a public safety alert and asked residents not to approach the dog if they saw it. The animal was reportedly observed heading northwest in the area of 67th Avenue and Lamar Street. Later that afternoon, Arvada police located the dog with the department’s Drone First Responder program. The dog was captured and taken to a local animal shelter. Authorities did not immediately release further information about the injured people.
For Boulder, Lafayette, Louisville, Longmont, Erie, and other communities in our area, the same basic state statutes may apply when a dog bites or seriously injures someone.
At Cook, Bradford & Levy, we think it is particularly important to understand one point about Colorado law: dog bite liability is more nuanced than the commonly repeated idea that an owner automatically pays whenever a dog bites somebody. Colorado does impose strict liability in certain cases but types of damages recoverable may be limited. When analyzing to proceed under strict liability or negligence theories, the severity of the injury, how the injury occurred, where the victim was located, and what the victim and dog owner were doing can all matter.
What the Arvada Dog Attack Tells Us About Dog Bite Claims
The publicly available information about the Arvada incident remains limited. We do not know, for example, exactly how the people inside the home interacted with the dog before the attack, whether the dog had displayed aggression previously, or the precise nature of the serious injuries reported by police.
Those missing facts matter when evaluating civil liability.
A dog attack inside a residence can involve very different legal questions from an attack involving a loose dog on a public sidewalk. The injured person might be a guest, family member, roommate, worker, tenant, property owner, or someone else lawfully present. The dog might belong to the homeowner, another resident, or a visitor.
The Arvada incident also demonstrates why prior behavior is not the only issue. People sometimes believe that a dog owner cannot be liable unless the animal has bitten someone before. Colorado law does not impose such a universal requirement.
For certain serious dog bite injuries, a victim does not always have to prove that the owner knew the dog was dangerous.
Colorado’s Strict Liability Law for Serious Dog Bites
Colorado Revised Statutes § 13-21-124 is the starting point for many dog bite cases.
Under C.R.S. § 13-21-124(2), a person who suffers “serious bodily injury” or death after being bitten by a dog while lawfully on public or private property may pursue economic damages from the dog owner regardless of whether the dog previously displayed dangerous tendencies and regardless of whether the owner knew about those tendencies. However, it does not allow for recovery of non-economic damages, such as pain and suffering.
That is commonly described as strict liability.
In practical terms, there does not necessarily have to be a previous bite, previous attack, or documented complaint before the statute can apply.
That distinction can be extremely important. A family may adopt a dog with no known history of aggression. The dog could later bite a guest severely enough to cause a qualifying injury. The absence of an earlier bite does not automatically eliminate the owner’s potential statutory liability.
What Counts as a Serious Bodily Injury?
The statutory threshold matters.
C.R.S. § 13-21-124 incorporates Colorado’s definition of “serious bodily injury” from C.R.S. § 18-1-901(3)(p). That definition includes injuries involving circumstances such as a substantial risk of death, a substantial risk of serious permanent disfigurement, a substantial risk of protracted loss or impairment of a bodily function, and certain fractures or serious burns.
Dog attacks can produce injuries that potentially fall within that definition. Deep facial wounds, nerve damage, fractures, tendon injuries, extensive lacerations, permanent scarring, and injuries requiring reconstructive procedures are examples of conditions that may require close evaluation.
Not every bite, however, qualifies as a “serious bodily injury.”
That does not mean someone with a less severe injury automatically has no claim. It means the strict liability provision of C.R.S. § 13-21-124(2) may not provide the complete answer, and other legal theories may need to be considered.
Strict Liability Under the Dog Bite Statute Is Primarily About Economic Damages
Another frequently misunderstood part of Colorado law is what damages the strict liability statute actually provides.
C.R.S. § 13-21-124(2) specifically authorizes recovery of economic damages when its requirements are satisfied. Those losses may include medical bills, future medical expenses, lost income, future loss of earnings, rehabilitation expenses, and other measurable financial losses associated with the injury.
But dog attack cases are often about much more than hospital bills.
A person bitten on the face may be left with visible scars for life. A child may become terrified of dogs. Someone attacked while jogging may no longer feel comfortable running through the neighborhood. A serious attack can cause pain, anxiety, sleep problems, embarrassment, and lasting changes to everyday life.
Colorado’s dog bite statute expressly preserves other potential causes of action. C.R.S. § 13-21-124(6)(a) states that the statute does not eliminate causes of action based on negligence, intentional torts, outrageous conduct, or other theories.
That means we look beyond the strict liability statute when the facts support doing so.
Negligence Can Be Just as Important as Strict Liability
A negligence claim focuses more closely on the conduct surrounding the attack.
Did the owner know the dog had shown aggression?
Had the dog lunged at neighbors?
Were there previous bites or attempted bites?
Had someone complained that the dog regularly escaped from a yard?
Did the owner ignore a broken gate or inadequate fence?
Was a dog allowed to roam or was off leash, in violation of a local ordinance?
Did the owner fail to control the animal after being warned about concerning behavior?
Evidence like this can become extremely important in a Colorado dog attack case.
C.R.S. § 13-21-124(6) specifically leaves room for these additional theories. As a result, two claims arising from the same bite can involve different legal questions. One may examine strict statutory liability for economic losses, while another may examine whether negligent conduct supports recovery for additional injuries and damages.
That is one reason we do not evaluate a serious dog bite by simply asking whether the dog had bitten anyone before.
Colorado’s Law Includes Several Exceptions
Strict liability is powerful, but it is not unlimited.
C.R.S. § 13-21-124(5) identifies circumstances in which the statutory liability provision does not apply. Among other situations, the statute addresses people who are unlawfully on property, people who knowingly provoke a dog, certain working professionals handling animals in the course of their duties, working dogs under specified circumstances, and dogs being used by law enforcement or military personnel while performing official duties.
The statute also contains an exception involving someone bitten while on the dog owner’s property when the property is clearly and conspicuously marked with certain “no trespassing” or “beware of dog” signage.
These exceptions are one reason the details surrounding an incident matter so much.
The word “provocation,” for example, should not simply be assumed because an owner or insurance adjuster uses it. C.R.S. § 13-21-124(5)(d) refers to a person knowingly provoking the dog. Whether someone’s actions meet that standard can depend heavily on the evidence.
A Dog Can Also Be Considered “Dangerous” Under Colorado Criminal Law
Civil compensation is only one aspect of Colorado dog attack law.
C.R.S. § 18-9-204.5 addresses unlawful ownership of a dangerous dog. The statute defines a dangerous dog to include, among other things, a dog that inflicts bodily or serious bodily injury on a person or domestic animal, or demonstrates tendencies that would cause a reasonable person to believe the dog may inflict such injury.
Depending on the circumstances and severity of an attack, the statute provides for criminal consequences and procedures involving the animal.
Those proceedings are separate from a victim’s civil injury claim.
This distinction matters after an incident like the July 2026 Arvada attack. Police, prosecutors, animal-control authorities, and civil attorneys may all be looking at the same event, but they are addressing different questions.
A criminal or animal-control investigation focuses on enforcement and public safety. A personal injury claim focuses on the losses suffered by the injured person and who may legally be responsible for compensating them.
Boulder Has Its Own Rules About Dogs in Public
State law is only part of the picture.
Within the City of Boulder, Boulder Revised Code § 6-1-16 generally requires a dog outside its guardian’s premises to be restrained by a leash or otherwise fall within one of the ordinance’s exceptions. Boulder also has a Voice and Sight Control program that permits qualifying dogs to be off leash in certain designated Open Space and Mountain Parks areas when the program’s requirements are satisfied.
That distinction matters because Boulder residents regularly encounter dogs on trails, paths, neighborhood sidewalks, parks, and open-space property.
An off-leash dog is not automatically being handled illegally simply because it is off leash somewhere in Boulder. Location and compliance with the applicable rules matter. On the other hand, a dog running loose in an area where restraint is required can create important evidence if an attack occurs.
Local ordinance violations can therefore become part of the broader investigation into whether an owner exercised reasonable care.
Insurance Often Becomes a Major Part of a Dog Bite Claim
People are sometimes reluctant to pursue a claim because the dog belongs to a friend, neighbor, or relative. They assume that seeking compensation necessarily means trying to collect money personally from someone they know.
That is frequently not how these cases work.
Homeowners insurance and renters insurance may provide liability coverage for dog bites and dog attacks, depending on the policy and circumstances. At Cook, Bradford & Levy, we have handled serious dog bite claims in which insurance coverage was a central source of compensation.
Coverage should never be assumed, however. Policies can differ considerably. Some contain animal-related exclusions, coverage limitations, or provisions relating to particular dogs or prior incidents.
We therefore want to identify applicable insurance policies early and review the actual coverage rather than rely on assumptions about what an insurer will or will not pay.
What Should You Do After a Serious Dog Bite in Boulder County?
Medical care comes first.
Dog bites can damage tissue well beneath the surface of the skin, and wounds can become infected. Serious bites can also involve nerves, tendons, muscles, joints, or bones. Facial wounds may require evaluation for potential reconstructive treatment and scarring.
Once the immediate emergency is addressed, preserving information can make a significant difference.
We generally want to know exactly where the attack happened, who owned or controlled the dog, whether there were witnesses, whether photographs or video exist, whether police or animal-control officers responded, and whether the dog had been involved in previous incidents.
Photographs should document wounds during the healing process, not simply on the first day. Scarring often changes dramatically over a period of months.
Victims should also retain medical records, medical bills, prescription information, lost-wage documentation, correspondence with insurers, and any information they receive concerning the animal.
A seemingly small detail can later become important.
Colorado’s Comparative Negligence Law May Also Affect a Claim
When a negligence claim is involved, insurers may argue that the injured person contributed to what happened.
Colorado follows a modified comparative negligence system under C.R.S. § 13-21-111. In a negligence case, recoverable damages can be reduced according to the percentage of negligence attributed to the injured person. Recovery can be barred when the injured person’s negligence is equal to or greater than the negligence against which it is compared under the statute.
Dog cases can produce disputes over issues such as whether someone ignored a warning, entered an area without permission, interacted with the dog after being instructed not to do so, or provoked the animal.
Those allegations should be evaluated against the evidence, not simply accepted because an insurance company raises them.
There Is Also a Deadline for Bringing a Colorado Dog Bite Claim
Waiting too long can create serious problems.
C.R.S. § 13-80-102 establishes a two-year limitations period for many Colorado tort actions, including negligence claims. Dog bite cases generally need to be investigated with that deadline in mind, although the specific limitations analysis can vary depending on the claim, the identity and age of the injured person, and other circumstances.
We also prefer not to wait until a limitations deadline is approaching.
Surveillance footage can be erased. Witnesses can move. Text messages disappear. Property conditions change. Animal-control records can become harder to locate. Memories become less precise.
Prompt investigation usually gives us a much clearer picture of what happened.
What Boulder County Residents Can Take Away From the Arvada Attack
The Arvada incident was unusual enough to trigger a neighborhood safety alert and a police drone search, but the underlying legal questions are ones that arise after dog attacks throughout Colorado.
A dog does not necessarily need a previous bite history for its owner to face liability. Colorado’s strict liability statute may apply when an actual bite causes serious bodily injury to someone lawfully on the property. At the same time, that statute provides economic damages and contains specific exceptions, so negligence and other legal theories may also play an important role.
Location matters. Prior behavior matters. Control of the dog matters. The victim’s conduct may matter. Insurance coverage matters.
Most importantly, the facts of one dog bite should not simply be assumed to produce the same result as another.
Talk With Our Boulder County Dog Bite Attorneys
At Cook, Bradford & Levy, we have represented people injured in serious dog bites and attacks in Boulder County and throughout Colorado. We understand that these cases can involve much more than an emergency-room bill. Permanent scarring, reconstructive procedures, lost income, pain, emotional trauma, and fear following an attack can affect someone long after the wounds initially heal.
When we evaluate a dog bite claim, we look at the complete picture. That can include the animal’s history, ownership and custody, witness accounts, local ordinances, animal-control records, property conditions, applicable insurance policies, medical evidence, and the Colorado statutes governing the claim.
If you or a family member has been seriously injured by a dog in Boulder, Lafayette, Louisville, Longmont, Erie, or elsewhere in Colorado, contact Cook, Bradford & Levy to discuss what happened. We offer free consultations, and there is no attorney fee unless we recover compensation for you.