A landmark commentary published in March 2026 by researchers at the University of Lincoln is reshaping how legal professionals, insurers, and courts think about dog bite liability. The paper, titled The Use of Structured Professional Judgement: A New Way to Understand and Assess Bite Risk from Dogs and published in the peer-reviewed journal Animals, introduces a forensic psychology framework to dog bite risk evaluation — one that directly challenges more than 25 years of breed-specific legislation and incident-based assumptions that have long dominated courtrooms and insurance underwriting desks.
For anyone navigating a dog bite claim in 2026, understanding this framework matters. Courts have historically leaned on breed classification or prior bite history as shorthand for dangerousness. The University of Lincoln’s structured professional judgment dog bite risk model argues that this shorthand is not only scientifically inadequate — it actively obstructs fair, evidence-based liability determination. With over 800,000 people requiring medical attention from dog bites annually (World Animal Foundation, 2026) and the national average dog bite claim now surging to $69,272 — an 18.3% increase in a single year (Injury Claims, 2026) — the stakes of getting liability determination right have never been higher.
What Is Structured Professional Judgment and Why Does It Apply to Dog Bites?
Structured professional judgment (SPJ) is a methodology long used in forensic psychology to assess human risk — most notably in predicting violent reoffending, domestic abuse recurrence, and child protection decisions. Rather than relying on a single static factor (like a criminal record), SPJ frameworks guide evaluators through a standardized set of empirically supported risk factors, weighting dynamic, contextual, and behavioral variables alongside historical data. The result is a more nuanced, defensible, and individualized risk classification.
The University of Lincoln’s March 2026 commentary proposes applying this same logic to dogs. Instead of asking “Is this a pit bull?” or “Has this dog bitten before?”, a structured professional judgment dog bite risk assessment would ask a series of structured questions: What is the dog’s observable behavioral history across multiple contexts? What environmental stressors were present at the time of the incident? What was the dog’s body language assessed to be by a qualified professional? Has the animal demonstrated resource guarding, fear-based reactivity, or redirected aggression under controlled evaluation?
This approach mirrors how the CDC frames occupational and public health risk — as a multi-variable, evidence-based process rather than a checklist of identifiers. The framework is currently under development and not yet widely adopted in U.S. courts, but its trajectory is significant.
The Problem With Breed-Specific and Incident-Based Approaches
To understand why this 2026 framework matters legally, it helps to map the existing landscape. Two dominant models currently shape how dog bite liability is assessed in the United States: breed-specific legislation (BSL) and the “one-bite rule” or prior incident standard.
Breed-Specific Legislation: A 25-Year Track Record Under Scrutiny
Breed-specific legislation has been a fixture of municipal and state dog policy for more than two decades. Laws targeting specific breeds — most commonly pit bull-type dogs, Rottweilers, and Dobermans — rest on the assumption that breed is a reliable proxy for aggression risk. By 2026, this assumption has been substantially eroded by the scientific literature. Major veterinary and behavioral science organizations, including the American Veterinary Medical Association, have consistently concluded that breed alone is a poor predictor of individual dog behavior. The University of Lincoln’s 2026 SPJ commentary adds further weight to this position by demonstrating that breed classification lacks the empirical specificity necessary to serve as a valid forensic risk factor.
For attorneys, this creates an increasingly untenable evidentiary foundation. Jurisdictions that rely on breed designation as proof of dangerousness — or that allow breed to function as a strict liability trigger — are operating on a framework that the scientific community has largely abandoned. As SPJ-based expert testimony becomes more available, expect challenges to breed-based liability presumptions to intensify in 2026 and beyond. The growing financial consequences of dog bite claims — with average settlements now exceeding $69,000 — make these evidentiary questions all the more consequential for both plaintiffs and defendants.
The Prior Bite Standard and Its Evidentiary Gaps
The “one-bite rule,” still operative in a significant minority of U.S. states, requires plaintiffs to demonstrate that the owner knew or should have known of the dog’s dangerous propensities — typically established through evidence of a prior bite or aggressive incident. The evidentiary gaps in this standard are well-documented: it effectively grants every dog one free bite, penalizes victims in cases involving first-time biters, and places an unreasonable burden of proof on injured parties who often lack access to the dog’s full behavioral history.
The SPJ framework directly addresses this gap. By shifting focus from incident history to a broader behavioral profile — including observable warning behaviors, environmental triggers, and owner management practices — it offers courts a richer evidentiary basis for assessing owner knowledge and foreseeability. A dog that has never bitten but has exhibited sustained resource guarding, fear-based reactivity, and multiple near-miss incidents is meaningfully different from a dog with no behavioral warning signs. The SPJ framework gives expert witnesses the tools to articulate that difference in a legally coherent way.
State legislatures are also responding to these evidentiary gaps through statutory reform. Since March 20, 2026, Ohio’s revised dog bite law — known as Avery’s Law — has introduced new rules governing qualifying dog acts, owner conduct, criminal penalties, designation proceedings, transfers, and what courts may or must order following certain severe attacks (Law Ohio, 2026). In Arizona, SB 1241 now requires dog owners to share contact information following a bite, addressing a longstanding practical barrier for victims seeking to pursue claims (Gordi, 2026). These reforms signal a broader legislative trend toward closing the evidentiary and accountability gaps that have historically disadvantaged dog bite victims.
Dog Bite Statistics in 2026: The Data Behind the Legal Gap
The scale of the dog bite problem in the United States makes the adequacy of current liability frameworks a matter of significant public concern. According to the World Animal Foundation, over 800,000 people bitten by dogs require medical attention annually in 2026 — a figure that translates into an enormous volume of insurance claims, emergency department visits, surgical procedures, and civil litigation. For every case that reaches a courtroom, many more are resolved through insurance negotiations where the same evidentiary weaknesses apply.
The financial dimension is equally striking. The national average dog bite insurance claim has surged to $69,272, representing an 18.3% increase in a single year (Injury Claims, 2026). This trajectory reflects not only rising medical costs but also growing jury awareness of the severity of dog bite injuries — including nerve damage, permanent scarring, psychological trauma, and in the most serious cases, fatalities. A Georgia jury’s 2026 award of $4.2 million to an 82-year-old woman attacked by her neighbor’s 130-pound Presa Canario mastiff illustrates the upper range of verdicts that plaintiffs can achieve when liability is clearly established and damages are well-documented (Injury Claims, 2026).
These numbers matter for the SPJ debate for a straightforward reason: if the legal frameworks used to assess dog bite liability are scientifically inadequate, then a substantial share of the 800,000-plus annual cases requiring medical attention are being resolved — or not resolved — on faulty evidentiary grounds. The question of how courts and insurers assess dog dangerousness is not an abstract academic concern. It determines whether injured people are compensated and whether responsible owners are held accountable.
How Courts and Insurers Can Apply the SPJ Framework
The University of Lincoln’s 2026 commentary does not offer a plug-and-play courtroom tool. It is a conceptual framework — a call for the development of structured, validated instruments for dog bite risk assessment modeled on the SPJ tools already in use in forensic psychology. But even in its current developmental form, it has practical implications for how attorneys, judges, and insurers approach dog bite cases.
Courtroom Applications: Expert Witness Standards
In federal court and in the majority of state courts, expert testimony must satisfy reliability standards derived from Daubert v. Merrell Dow Pharmaceuticals or analogous state rules. For a dog behavior expert to offer admissible testimony about an animal’s dangerousness, their methodology must be grounded in scientific principles, applied consistently, and capable of withstanding peer scrutiny. The SPJ framework — precisely because it is derived from peer-reviewed forensic science and requires structured, documented evaluation — provides a stronger methodological foundation than informal behavioral observation or breed-based generalizations.
In 2026, attorneys retaining dog behavior experts should evaluate whether those experts are applying anything resembling a structured assessment protocol. Are they documenting specific behavioral indicators? Are they considering environmental context? Are they distinguishing between static risk factors (breed, age, sex) and dynamic factors (training history, recent stressors, owner management)? The answers to these questions will increasingly determine whether expert testimony survives a Daubert challenge in higher-stakes dog bite litigation.
Insurance Underwriting: Moving Beyond Breed Exclusions
The insurance industry’s current approach to dog bite risk is dominated by breed exclusions — policies that deny coverage or charge higher premiums for owners of specific breeds regardless of individual animal behavior. This approach is administratively convenient but scientifically questionable for the same reasons that BSL is questionable: it treats breed as a reliable risk proxy when the evidence says it is not.
The SPJ framework suggests an alternative underwriting model — one that assesses individual animal behavioral profiles, owner management practices, and environmental risk factors rather than defaulting to breed as a categorical variable. With average claims now exceeding $69,000 and climbing, insurers have a direct financial incentive to develop more accurate risk stratification tools. A dog that scores high on structured behavioral risk indicators represents a meaningfully different actuarial risk than a calm, well-socialized dog of the same breed. The SPJ literature gives the insurance industry a roadmap for developing more defensible and financially rational underwriting criteria.
Practical Implications for Dog Bite Liability Determination in 2026
The emergence of the SPJ framework in 2026 has distinct implications depending on which side of a dog bite claim you are on.
For Plaintiffs: Strengthening Behavioral Evidence
Plaintiffs’ attorneys should recognize that SPJ-informed expert testimony can significantly expand the evidentiary basis for establishing owner knowledge and foreseeability — particularly in one-bite-rule jurisdictions. Rather than relying solely on evidence of a prior bite, an SPJ-informed expert can document a pattern of behavioral warning signs that a reasonable owner should have recognized and acted upon. This shifts the liability analysis from “did this dog bite before?” to “what did this dog’s behavioral history tell a responsible owner about its risk profile?” — a framing that is both scientifically stronger and more favorable to injured plaintiffs.
Gathering this evidence requires early action. Attorneys should move quickly to preserve veterinary records, training logs, neighbor statements about prior aggressive behavior, and any documentation of owner management failures. In states like Arizona, where SB 1241 now requires owners to share contact information after a bite, plaintiffs have an important new tool for initiating this evidence-gathering process promptly.
For Defendants: Establishing Affirmative Behavioral Evidence
The SPJ framework is not exclusively advantageous to plaintiffs. Defendants and their counsel can use SPJ-informed expert assessment to affirmatively establish that a dog had no meaningful behavioral risk indicators prior to an incident — effectively rebutting claims of foreseeability and owner knowledge. A structured, documented behavioral evaluation conducted by a qualified expert that finds no evidence of resource guarding, fear-based reactivity, or prior warning behaviors is a powerful piece of defense evidence in a negligence or strict liability case.
Defendants should also be attentive to post-incident assessment. An SPJ-informed evaluation conducted shortly after a bite incident can establish a behavioral baseline that supports arguments about the atypical, unforeseeable nature of the event. In Ohio, where Avery’s Law has been in effect since March 20, 2026, dog owners facing designation proceedings or criminal penalties following severe attacks should understand that behavioral evidence — including structured professional assessments — may be directly relevant to what courts may order in those proceedings.
For Premises Liability Attorneys: Expanding the Duty of Care Analysis
Dog bite cases that arise on commercial or residential premises often implicate premises liability theories alongside or instead of dog-specific statutes. Property owners, landlords, and business operators have a duty of care to protect lawful visitors from foreseeable harms — including dog attacks by animals they knew or should have known were present on the property. The SPJ framework expands the foreseeability analysis by providing a structured methodology for evaluating what behavioral warning signs were present and whether a reasonable property manager would have recognized them as risk indicators.
This is particularly relevant in cases involving landlord liability for tenant dogs, commercial premises where dogs are regularly present, and care facilities where vulnerable populations — such as the elderly or children — are exposed to animals. The Georgia verdict awarding $4.2 million to an 82-year-old attack victim illustrates the serious exposure that property owners and responsible parties can face when a large, powerful dog with foreseeable dangerous characteristics attacks a vulnerable person.
Frequently Asked Questions About Structured Professional Judgment Dog Bite Risk
What exactly is structured professional judgment in the context of dog bite risk assessment?
Structured professional judgment (SPJ) is a risk assessment methodology borrowed from forensic psychology. In the context of dog bite risk, it refers to a systematic, evidence-based approach to evaluating an individual dog’s likelihood of biting — one that goes beyond breed classification or prior incident history to assess behavioral indicators, environmental context, and owner management factors through a standardized evaluation protocol. The University of Lincoln’s 2026 commentary proposes adapting validated SPJ tools from human forensic risk assessment to create analogous instruments for dog bite risk evaluation.
Is the University of Lincoln’s SPJ dog bite framework currently used in U.S. courts?
Not in any standardized or widely adopted form as of 2026. The framework is at the conceptual and developmental stage — the March 2026 commentary is a call for the field to develop validated SPJ instruments for dog bite risk, not an announcement that such instruments are already in use. However, dog behavior experts in civil litigation have long applied informal versions of multi-factor behavioral assessment. The SPJ framework gives those assessments a more rigorous scientific foundation and a clearer methodological structure that is more likely to withstand Daubert scrutiny.
How does the SPJ framework change how insurance companies assess dog bite risk?
In theory, significantly. Current insurance underwriting for dog bite liability relies heavily on breed exclusions — a blunt instrument that the scientific literature does not strongly support. An SPJ-informed underwriting model would instead evaluate individual animal behavioral profiles, owner training and management practices, and environmental risk factors. Given that the average dog bite claim has surged to $69,272 in 2026 — up 18.3% in a single year — insurers have a compelling financial incentive to develop more precise risk stratification tools. The SPJ framework provides a scientifically grounded model for doing so, though practical implementation across the industry will take time.
Can a structured professional judgment assessment help a dog bite victim’s legal claim?
Yes, in several ways. An SPJ-informed expert assessment can document behavioral warning signs that predate the bite incident, strengthening arguments about owner knowledge and foreseeability — particularly important in one-bite-rule states. It can also provide a more scientifically credible basis for expert testimony than informal behavioral observation or breed-based characterizations, making that testimony more likely to be admitted and persuasive to a jury. With dog bite verdicts reaching into the millions — as illustrated by the 2026 Georgia award of $4.2 million — the quality of expert testimony on animal risk can be outcome-determinative.
What qualifications should an expert witness have to conduct an SPJ dog bite risk assessment?
In 2026, no formal SPJ certification exists for dog bite risk assessment — the framework is still being developed. However, attorneys seeking to retain qualified experts should look for individuals with formal credentials in applied animal behavior (such as Certified Applied Animal Behaviorists credentialed by the Animal Behavior Society), veterinary behavior specialty board certification, or equivalent advanced training. Experts should be able to demonstrate familiarity with the peer-reviewed behavioral science literature, a structured and documented assessment methodology, and experience providing expert testimony that has survived Daubert or analogous state reliability challenges. As the SPJ framework matures, expect more formal credentialing and training standards to emerge.
Patricia Coleman is a Animal Liability Legal Researcher with extensive knowledge of personal injury law and settlement values across the United States. With years of experience analyzing dog bite claims only cases, Patricia helps injury victims understand their legal rights and the potential value of their claims. Patricia is not an attorney and the information provided is for educational purposes only.