Surviving the Adolescent Dog Phase
What Actually Happens During Adolescence
If your previously eager, biddable puppy has suddenly started ignoring cues they knew perfectly well last month, congratulations — you have almost certainly entered the adolescent phase of dog ownership. It is one of the most misunderstood periods in a dog's life, and it is also, unfortunately, one of the most common reasons dogs are surrendered to shelters.
Understanding what is happening neurologically and behaviourally can make an enormous difference to how you respond — and to how your dog comes out the other side.
Adolescence in dogs is a transitional life stage between puppyhood and social maturity. During this period, the brain undergoes substantial remodelling. The prefrontal regions responsible for impulse control and decision-making are still developing, while hormonal changes — in both intact and desexed dogs, though the timing and intensity can differ — are influencing mood, reactivity, and motivation. The result is a dog who is simultaneously more easily aroused, less able to self-regulate, and more interested in the environment than in you.
This is not defiance. It is neurobiology.
Why Familiar Cues Seem to Disappear
One of the most frustrating experiences during this phase is watching a dog "forget" behaviours they appeared to have mastered. A solid recall evaporates the moment a squirrel appears. A reliable sit becomes a negotiation. This can feel personal, but it is not.
What is actually happening is a shift in the dog's arousal threshold and attentional priorities. The world has become intensely interesting in a new way. Scents, other dogs, movement, and social opportunities all compete fiercely with anything you are offering. At the same time, the neural pathways that support learned behaviours are being pruned and reorganised — a normal part of brain development that temporarily makes previously reliable responses feel less automatic.
The key insight here is that the behaviour has not been erased. It exists in the dog's repertoire. What has changed is the dog's capacity to access it under distraction and arousal. Your job is to keep those pathways active while working within the dog's actual capability in the moment.
Keeping Reward-Based Training Intact
This is where many people reach for harsher tools, reasoning that the dog "knows better" and is being stubborn. That reasoning is understandable but mistaken — and using punishment during a period of neurological and emotional instability carries real risk. Aversive methods can increase anxiety and reactivity, damage the relationship that underpins cooperative behaviour, and create negative associations with the very contexts you most need your dog to feel safe in.
The better approach is to treat adolescence as a training recalibration, not a training failure.
Lower your criteria temporarily. If your dog could sit reliably in a quiet living room last month but cannot hold a sit in the park today, that is useful information. Work at the level where your dog can actually succeed. Set up training sessions in lower-distraction environments and rebuild fluency there before increasing difficulty.
Increase the value of your reinforcers. The environment is now a very high-value distractor. Your rewards need to be genuinely competitive. For many dogs, this means upgrading to higher-value food rewards during this phase — something they find more compelling than what worked before.
Shorten sessions and increase frequency. Adolescent dogs often have fluctuating concentration spans. Five short, successful training sessions will do more than one long session that ends in frustration for both of you.
Maintain the relationship. Play, calm handling, free sniffing on walks, and low-pressure time together all matter. Training is only one part of the relationship, and the relationship is what training ultimately rests on.
Manage the environment proactively. You do not need to test your dog's recall off-lead in a dog park when they are in the thick of adolescence. Use a long line. Use a secure enclosed space. Management is not giving up — it is intelligent training practice.
What Not to Lose Sight Of
It can help to think of the adolescent phase as analogous to running a long race at altitude. The conditions are harder. Your pace slows. You adjust your expectations without abandoning the route. Not sure where your dog actually stands right now across different behaviours and environments? Working through a structured training assessment can help you identify where to focus your energy most usefully.
Consistency during this period matters more than intensity. Dogs who receive patient, reward-based training throughout adolescence — even when progress feels slow — tend to emerge from the phase with strong foundations and robust, generalised behaviour. The neural remodelling that makes this period so challenging is also building the architecture of the adult dog's brain. What you reinforce now, repeatedly and positively, is contributing to who your dog becomes.
The adolescent phase ends. It always does. What you do in the meantime shapes what comes after it.
References
Ziv, G. (2017). The effects of using aversive training methods in dogs—A review. Journal of Veterinary Behavior, 19, 50–60.
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