By Richard Polsky, Ph.D. – Animal Behavior Expert Witness
In personal injury cases involving dog attacks, the behavior of the dog is often at the center of the legal dispute. But courts cannot resolve questions about canine aggression without the help of science-based analysis. As a court-qualified expert witness and Ph.D.-level animal behaviorist, I provide attorneys in California with authoritative, courtroom-ready evaluations on the causes and context of dog aggression.
Canine aggression is multifactorial and context-specific, influenced by genetics, environment, learning history, and the owner’s handling of the animal. My expert testimony draws from decades of scientific research and direct casework to clarify whether a bite incident was provoked, foreseeable, or preventable.
Why Expert Testimony on Aggression Matters
Dog bite cases often turn on key legal questions that require behavioral interpretation:
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Was the dog’s aggression predictable based on prior behavior?
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Was the attack provoked or unprovoked?
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Did the dog act in a way consistent with fear, territoriality, or redirected frustration?
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Was the owner negligent in failing to control a known risk?
To answer these questions, courts require more than general veterinary input—they need expert behavioral interpretation backed by peer-reviewed science (Overall, 2013; Horwitz & Mills, 2009).
Types of Aggression Commonly Evaluated
Understanding the subtype of aggression involved is essential. My evaluations classify the dog’s behavior according to recognized categories in clinical animal behavior, such as:
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Territorial Aggression
Defensive aggression directed at individuals perceived as intruding on the dog’s home range or space (Landsberg et al., 2013). -
Fear-Based Aggression
Aggression arising from a dog’s perception of threat or inability to escape, particularly when cornered or physically restrained (Mills et al., 2014). -
Resource Guarding (Possessive Aggression)
Aggression exhibited when a dog protects food, toys, or people, often triggered by an attempt to remove or approach the guarded item (Jacobs et al., 2020). -
Leash-Related Aggression
Also known as frustration-induced aggression, common in dogs that react aggressively when physically restrained during arousing stimuli such as approaching dogs or people (Herron et al., 2009). -
Predatory or Misclassified Play Aggression
In some cases, high-arousal behavior or poorly inhibited play may escalate into harmful biting—especially in working breeds with strong prey drive.
Each case requires detailed behavioral reconstruction, including review of the dog’s history, environment, provocation factors, and owner response.
Expert Services Offered
As an expert witness in dog bite litigation, I provide:
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Forensic Behavioral Analysis of the attack and its context
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Evaluation of the Dog’s History and Temperament based on reports, veterinary records, and witness statements
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Provocation and Trigger Analysis, including interpretation of human actions through the lens of canine threat perception
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Expert Reports, Affidavits, and Declarations
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Testimony in Court, Arbitration, or Deposition
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Breed Behavior Insight, without relying on stereotyping or unsupported generalizations
I serve both plaintiff and defense counsel, always with an unbiased scientific approach.
Qualifications of Dr. Richard Polsky
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Ph.D. in Animal Behavior, University of Southern California
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Certified Applied Animal Behaviorist (CAAB)
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President, Animal Behavior Counseling Services (Los Angeles, CA)
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Over 30 years of experience in behavioral forensics
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Court-qualified expert witness in California and multiple jurisdictions
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Widely published in the field of dog aggression and canine behavioral risk
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Contributor to national seminars on dog bite prevention and legal strategies in dog attack cases
Why California Attorneys Rely on My Expertise
In emotionally charged, high-stakes litigation, expert clarity matters. My role is to translate complex behavioral science into plain, actionable testimony that supports your legal strategy. Whether the case involves a single bite or a fatal mauling, I provide the depth of analysis needed to support or challenge claims related to aggression, provocation, and owner negligence.
Contact Dr. Richard Polsky
If you’re litigating a dog bite case in California where canine aggression is a central issue, I can help clarify the behavioral evidence and provide expert opinion based on science—not speculation.
Richard Polsky, Ph.D.
Dog Bite Expert Witness – Canine Behavior Specialist
Los Angeles, California | Available for Nationwide Consultation
Technical References
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Overall, K. L. (2013). Manual of Clinical Behavioral Medicine for Dogs and Cats. Elsevier.
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Landsberg, G. M., Hunthausen, W. L., & Ackerman, L. J. (2013). Behavior Problems of the Dog and Cat (3rd ed.). Saunders Elsevier.
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Mills, D. S., Karagiannis, C., & Zulch, H. (2014). “Stress—its effects on health and behavior: A guide for practitioners.” Veterinary Clinics: Small Animal Practice, 44(3), 525–541.
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Herron, M. E., Shofer, F. S., & Reisner, I. R. (2009). “Survey of the use and outcome of confrontational and non-confrontational training methods in client-owned dogs showing undesired behaviors.” Applied Animal Behaviour Science, 117(1–2), 47–54.
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Horwitz, D. F., & Mills, D. S. (2009). BSAVA Manual of Canine and Feline Behavioural Medicine. British Small Animal Veterinary Association.
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Jacobs, C., De Keuster, T., & van Gorp, M. (2020). “Resource guarding in dogs: Behavioral analysis and management.” Journal of Veterinary Behavior, 36, 1–7.
