Aggressive Dog Training in Knoxville, TN
Aggressive dog trainer in Knoxville, TN. Behavior modification and rehabilitation for aggression, reactivity and fear, from a trainer with 33 years of experience. Request a free quote.

The short answer
Aggressive dog training in Knoxville, from a trainer who has handled police K-9s
Dogs with aggression, reactivity, fear or resource guarding start with an evaluation of the dog, then go into our 8-week behavior modification program at $6,500, with extra weeks at $1,000 each. Justin Rigney, who founded K9 Services Unlimited, spent 10 years as a police K-9 handler and trainer.
- 33 years of professional dog training
- 17 years in law enforcement, 10 as a K-9 handler and trainer
- Trained and certified police K-9 teams
- We cannot promise a particular result, but we will tell you honestly what training can do for your dog



Living with an aggressive dog is stressful and often frightening. If your dog growls, snaps, lunges or bites, you are not alone, and you do not have to manage it alone. K9 Services Unlimited trains aggressive dogs in Knoxville, TN through structured behavior modification and rehabilitation.
Signs your dog may need aggression training
- Growling, snarling or snapping at people or other dogs
- Lunging and barking on walks (leash reactivity)
- Guarding food, toys, furniture or space
- Fear-based reactions to strangers, visitors or new situations
- Aggression toward other dogs in the household
Aggression has different causes, including fear, anxiety, guarding and poor impulse control, so the plan has to fit the dog. Never punish a growl by itself. It is a warning, and a dog that stops warning can be more dangerous.
How we approach it
Our behavior modification and behavior rehabilitation programs begin with an evaluation to identify your dog's triggers and patterns. Training then takes place in a controlled environment where triggers and outcomes are managed, using desensitization, positive reinforcement and firm, consistent structure. We build impulse control and obedience under pressure, and we teach you to recognize early warning signs and respond before a situation escalates.
Realistic expectations
We are straightforward about what training can do. Your dog will not be cured of every tendency, but with structure and impulse control many dogs become safer, calmer and easier to live with. Lasting change also depends on you, so we teach owners how to maintain the work at home.
Programs and cost
Some aggressive dogs do best in an immersive setting. Our board and train program places your dog with us for 4 or 6 weeks. Aggression training is listed on our behavior modification page at $6,500 for the 8-week program, with additional weeks at $1,000 per week. Pricing for your dog depends on its situation, so please ask for a quote.
If your dog has bitten someone or you are worried about safety right now, keep it separated from visitors and children, use a secure leash and fence, and consult your veterinarian, since pain and medical problems can contribute to aggression.
Can an aggressive dog be trained?
Many dogs improve significantly with structured training, but aggression is rarely "cured." The goal is a dog that is safer, calmer and more controllable, and an owner who knows how to manage the dog. We will tell you honestly what we think is realistic after evaluating your dog.
How much does aggressive dog training cost?
Our behavior modification page lists our 8-week behavior modification program at $6,500, with additional weeks at $1,000 per week. Please contact us for a quote based on your dog's situation.
Is obedience training enough for an aggressive dog?
Obedience helps, but it is usually not enough on its own. Aggression and reactivity need structure, boundaries, controlled exposure to triggers and a clear plan for the owner, which is what our behavior programs provide.
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K9 Services Unlimited trains dogs and their owners in Knoxville, Tennessee and the surrounding communities. Call us, send a message, or request a free consultation any day between 7 AM and 7 PM. Tell us about your dog, what you would like to change, and what a good result looks like for your household, and we will recommend a clear next step.
(865) 455-5191Every Day 7 AM - 7 PM
Schedule a free consultation