Behavior Camp
A 21-night immersive behavior-modification program, the best fit for moderate behavior issues.
Dog Behavior Solutions
Make Home Safe for Both Dogs Again
Fights between dogs who live together affect every room and every routine. Partners Dogs helps you stop the next rehearsal, understand the relationship, and make realistic decisions about safety and coexistence.
Behavior severity
ModerateWhat you may be seeing
Common signs
- Stiffening, staring, blocking, hovering, or tense movement between dogs
- Conflict around food, toys, people, doorways, or resting spaces
- One dog avoiding rooms or normal activities
- Fights that become easier to trigger or harder to stop
- A household organized around gates and rotations
Seek help now
- Any puncture, sustained fight, repeated attack, or veterinary injury
- A large size or strength difference that increases harm
- Redirected bites to a person breaking up a fight
- Sudden onset, pain, illness, or neurological change in either dog
Moderate is a starting point for planning, not a diagnosis. Keep the dogs securely separated and arrange veterinary care plus an in-person assessment before reintroduction.
Understanding the behavior
What is sibling aggression?
Sibling aggression is conflict between dogs in the same household, whether biologically related or not. Resources, social maturity, pain, redirected arousal, household change, incompatible play, and repeated fights can all contribute. The dynamic involves both dogs and the environment.
Secure separation is the first step after a serious fight. Use closed doors, crates when appropriate, gates with backups, separate feeding, and planned rotations. Do not force reunions or let the dogs work it out. Each dog should receive a veterinary check, especially when the aggression began suddenly.
Severe cases receive an in-person assessment before program placement. Some pairs can rebuild safer coexistence. Others need permanent management or separate homes. Prognosis depends on injuries, fight pattern, triggers, size difference, household capacity, and follow-through.
Partners Dogs has trained Arizona dogs through every kind of sibling aggression case since 1997, at our Scottsdale and Cave Creek facilities. Lifetime trainer support is included with every board-and-train program.
The transformation
Before and after training
Drag the slider to see the change our programs make for a dog with sibling aggression. Same dog, same home, real outcome.
Watch
How we work on sibling aggression
Short walkthroughs from our trainers on the exact techniques we use to resolve sibling aggression. See how the work actually looks, then choose the path that fits your dog.
70,000+Dogs Trained
28+Years Experience
4.8★Average Rating
2Arizona Campuses
Recommended path · Moderate severity
The right program for sibling aggression
Based on how sibling aggression typically presents, here is where we would start. Not sure which fits? Take the PD360 assessment for a personalized recommendation.
Private Lessons
One-on-one sessions to address specific triggers and transfer trainer skills to you.
The process
How it works
Assessment and check-in
- We verify vaccination records and complete pre-check-in forms.
- Your dog receives a full behavioral assessment.
- We set goals and build a personalized training plan.
- You meet the primary trainer and tour the facility.
Training and progress reports
- Multiple active training sessions every day.
- Controlled exposure and desensitization to triggers.
- Immersive socialization in a managed environment.
- Regular progress reports with photos and video.
Transition and follow-up
- Private lessons that transfer the training to you.
- Pet Parenting group classes for ongoing support.
- Access to our full Pet Parent Guide.
- Weeks of follow-up so the change lasts at home.
Not sure which program
Get a recommendation in minutes
Take our quick PD360 assessment for a personalized recommendation, or talk to a trainer who has seen sibling aggression many times before.
What our clients say
“"My two dogs had coexisted for three years and then one day everything changed. We'd had four serious fights in six weeks. I was gate-managing my own house and crying every night. The Partners team assessed both dogs, was honest about what we were dealing with, and put together a plan that addressed the dynamic between them. Eight months later, they can share space under our management. I still can't believe the change."”
“"We got two puppies at the same time, the littermate thing, and we had no idea what we were creating. By the time they were eighteen months old, they were having serious fights. Both went through programs at Partners. The team gave us a clear picture of what was happening between them and the tools to manage and rebuild the relationship. It took real work and patience, but we have both dogs and they can be together within the plan."”
Good to know
Frequently asked questions
Do I have to rehome one of my dogs if they're fighting?
Not necessarily, but sometimes, yes. The honest answer depends on the case.
Indicators that the dogs can live together with proper work:
- Fights have not drawn blood or have been short and resolved without injury
- Triggers are identifiable (specific resources, specific situations)
- Both dogs show appropriate communication signals, growling, lip lifting, snapping before biting
- Owner can commit to multi-month behavior modification plus lifelong management
Indicators that rehoming may be the right call:
- Repeated serious bites between the dogs
- One dog cannot live safely in the household even with management
- Children in the home and the conflict cannot be managed safely
- Quality of life for one or both dogs is genuinely poor
At Partners Dogs we will assess honestly and tell you what is realistic. We have helped many families keep both dogs successfully. We have also been the people who told a family their best path forward was rehoming. We do not pressure either way. Your dogs' safety drives the recommendation.
Do dogs of the same sex fight more than opposite-sex pairs?
There is a real pattern here, but it is a risk factor, not a guarantee in either direction.
- Female-female pairs statistically carry the highest risk of serious, sustained conflict when things do go wrong, often described as more intense and less likely to resolve quickly compared to other combinations.
- Male-male pairs can also escalate, particularly with intact males or dogs with a history of conflict, though many male-male households do fine.
- Male-female pairs statistically have the lowest average conflict rate, though “statistically lower” does not mean risk-free.
- Individual temperament matters more than sex. A well-matched same-sex pair often does better than a poorly matched opposite-sex pair.
If you are adding a second dog, sex pairing is one factor worth weighing among several, alongside energy level, age gap, and temperament fit.
What program is recommended for sibling aggression?
Sibling aggression usually starts with Behavior Camp, our 21-night board-and-train. Severe cases call for Transform Camp, our most intensive 28-night immersive board-and-train, sometimes for one dog and sometimes for both depending on the case. Whether a dog was reacting or started the fight matters more than whether there was a bite. A PD360 Assessment reads the severity and decides the program, which dogs need to be enrolled, and what the reintroduction plan looks like.
Why are my dogs fighting at home?
Sibling aggression is one of the most stressful patterns a family can face. The drivers we see most often:
- Resource competition. Food, toys, beds, water bowls, your attention: any contested resource can spark a fight.
- Social hierarchy disruption. Maturing dogs, a new dog added to the household, or an aging dog losing status often trigger a wave of conflict.
- One dog has changed. Pain, vision loss, hearing loss, cognitive decline: when one dog's communication changes, the other dog often responds with conflict.
- The owner is in the middle. Many sibling fights happen when both dogs converge on the human. The trigger is competition for you.
Critical: never let dogs “work it out.” Each fight makes the next more likely. A fight that draws blood can make this a Transform Camp case, but the context matters more than the injury: whether one dog was reacting to something or started the fight. The PD360 Assessment reads that context, decides between Behavior Camp and Transform Camp, and sets whether we work with one dog or both.
Can two dogs live together again after a serious fight?
Often, yes, but the path back is structured and gradual, not “let them work it out” a second time.
- Full separation first. Different rooms, rotating access, no shared space while everyone decompresses from the incident.
- Parallel activities at a distance. Walking both dogs separately but on the same route, feeding on opposite sides of a door, building positive association without direct contact.
- Short, supervised interactions. Once both dogs are calm around each other at a distance, brief structured sessions, both leashed, both handled by capable people, gradually increasing duration.
- Muzzle training as a safety net, not a punishment, gives everyone confidence during the reintroduction phase.
After a serious fight, this process is best done with our trainers guiding it. The PD360 Assessment decides whether it is Behavior Camp or Transform Camp work, based on whether one dog was reacting or starting the fights and how severe they have been. We will tell you honestly whether full reintegration is realistic for your specific dogs.
What if my dogs are fighting each other over food, not guarding from me?
Conflict between household dogs at feeding time is common and needs the same immediate management as guarding from a person: complete separation at meals, no shared bowls, and picking up food only once every dog has left the area. The dogs may also need individually tailored work, since one guarding dog can put every dog in the home at risk.
Related behaviors
Dogs with sibling aggression often show these patterns too. Explore the behaviors below. We treat them all.
Keep learning
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Ready for the next step
Talk to a trainer now
Every dog and household is different. Get a real conversation with a Partners Dogs trainer who has treated sibling aggression for more than 28 years. We help you sort out what to try first and what can wait.