Dog Adolescence: Simple, Smart Ways to Survive the Teens

Dog adolescence is the normal, temporary stage, usually starting somewhere between about six and twelve months and easing over the following year or so, when a well-trained puppy suddenly stops listening, chews again and acts as if nothing was ever taught. The training has not been lost; it is harder for your dog to reach while their brain and body change. Lower the difficulty, manage what you cannot win yet, keep rewarding generously and protect your relationship, and it passes.

This guide explains what adolescence looks like, why it happens, how long it lasts by size of dog, and exactly what to do this week, plus the mistakes that make it harder and the signs that mean it is time to call your vet or a qualified trainer.

At a glance

• It is developmental, not defiance. Impulse control matures more slowly than curiosity and excitement, so your dog wants more and can stop themselves less.
• Timing varies with size. Small breeds often start and finish earlier; large and giant breeds can stay “teenage” well into their second year.
• Go back to easy. Retrain in quiet places, pay with better rewards and keep sessions short.
• Management counts as training. A long line, cleared counters and enforced naps stop bad habits being rehearsed.
• Sudden or extreme change is a vet question first, because pain and illness can look like “bad behaviour”.

What dog adolescence actually looks like

For many households the change is sudden enough that they can name the week. The puppy who trotted back to you, sat politely for dinner and ignored the neighbour’s cat is replaced by a dog who seems to have heard none of it before. Common signs include:

• Recall evaporates. Your dog looks at you, considers it, and carries on sniffing.
• Selective deafness. Cues that work in the kitchen stop working in the park, or only work when nothing else is happening.
• New fears. Bins, statues, people in hats or a friend they have always liked suddenly warrant barking or backing away.
• Testing boundaries. Counter-surfing, jumping up and ignoring rules that seemed settled.
• Chewing comes back, often aimed at furniture, as adult teeth settle and jaws strengthen.
• Big feelings on the lead. Pulling, lunging or barking at other dogs out of frustration or worry.
• Overtiredness that looks like energy. A dog short of sleep often seems wired rather than tired.

That last point catches a lot of people out. Adolescent dogs still need plenty of rest, and many households that think they have an exercise problem actually have a sleep problem. Adding longer, faster walks to an overtired dog usually makes things worse.

Why everything you taught seems to have vanished

It has not vanished. Three things are happening at once.

The brain is being remodelled

The parts of the brain that handle impulse control and calm decision-making mature more slowly than the parts that drive curiosity, novelty-seeking and excitement. Your dog genuinely wants things more and has less ability to put the brakes on.

Hormones and the body are changing

Sexual maturity brings new interest in scents, other dogs and the wider world. A cue you taught competes poorly with a nose full of fascinating new information. Growth spurts can also leave a dog clumsy, sore or simply restless.

Puppy training was learnt in easy conditions

A sit taught in a quiet kitchen is not the same skill as a sit beside a busy park. Adolescence is often when those gaps become obvious. Your dog is being asked to use quiet-room learning in a loud world.

What the research shows

A study of guide-dog puppies published in Biology Letters (Asher and colleagues, 2020) compared the same dogs at five, eight and twelve months. At around eight months, dogs were more likely to ignore a “sit” cue from their usual carer, but not from a stranger, and carers rated them as less trainable at that age, with trainability recovering by twelve months. Dogs with less secure attachment to their carer showed more of this. In other words, the “teenage” dip is real, temporary and often aimed at the person closest to the dog, which is a strong reason to protect that relationship rather than fight over it.

How long does adolescence last? A rough guide by size

There is no fixed start or end date, and individual dogs vary a great deal. The ranges below are general patterns, not rules; your vet can give you a better picture for your dog’s breed and build.

Dog size	Typical onset	Usually settling by	What to expect
Toy and small	Around 6 months, sometimes earlier	Often late in the first year to around 18 months	Shorter phase; barking and new fears can be prominent
Medium	Around 6 to 9 months	Often around 18 months to 2 years	Recall and lead manners usually slip most
Large	Around 7 to 12 months	Often around 2 years	Strength makes pulling and jumping up harder to manage
Giant	Can start later in the first year	Sometimes 2 to 3 years	Long phase; protect growing joints from repetitive high-impact exercise

Most owners notice the end gradually rather than on a particular day: hard days become less frequent, and then one week you realise your dog has been easy for a fortnight.

Adolescent fear periods

Somewhere in this stretch many dogs go through a wobble where the world becomes briefly alarming again. These phases are usually short, but what happens during them matters, because a frightening experience during a wobble can leave a longer mark than the same experience a few months earlier.

The approach is calm and effective:

• Add distance until your dog can look without barking or backing off.
• Let your dog observe at their own pace. Never drag them closer.
• Feed something they love while they watch, then walk away.
• Comfort your dog if they come to you. Reassuring a frightened dog does not reinforce fear.

If you are unsure whether your dog is worried or simply excited, our guide to spotting the hidden signs of stress in your dog walks through the subtle body language to look for. For a dog whose new fears are not fading, building confidence in a fearful dog explains a gentle step-by-step approach.

Going back to basics, without shame

The instinct is to push harder because your dog “knows this”. It works better to lower the difficulty until your dog can succeed again, then build back up.

• Retrain in easy places first. Kitchen, then garden, then a quiet street, then a busier one. Treat each new place as a new lesson.
• Pay well again. This is a poor time to fade rewards. Use better food, more often, especially for recall.
• Shorten sessions. Two minutes several times a day beats a twenty-minute battle.
• Stop calling a recall you cannot back up. Every ignored call teaches your dog the word is optional. Go and get your dog instead, and practise on a long line.
• Reward voluntary check-ins. Every time your dog glances back at you on a walk, mark it and reward it. That habit underpins recall for life.

Our step-by-step guide to teaching a recall your dog will actually come back for is a good place to restart.

Management is a strategy, not a failure

Management means arranging life so the unwanted behaviour cannot be practised. Every rehearsal strengthens a habit, so preventing rehearsals is real training work, not giving up.

Problem	Management (stops rehearsal now)	Training (builds the long-term skill)
Ignoring recall	Long line on a well-fitted harness in open spaces	Rebuild recall indoors, then outdoors with high-value rewards
Counter-surfing	Clear counters; use a baby gate at the kitchen door	Reward settling on a mat while you cook
Pulling on the lead	Walk at quieter times; shorter, sniffier routes	Reward a loose lead, starting somewhere boring
Barking or lunging at dogs	Cross the road, turn away, increase distance	Pair the sight of dogs at a distance with food
Destructive chewing	Put shoes away; supervise or use a pen	Offer suitable chews before your dog goes looking
Overtiredness	Enforced naps in a pen, a crate your dog likes, or a quiet room	Teach a relaxed settle as a daily routine

If your dog’s reactions to other dogs are growing, the reactive dog on the lead covers why it happens and how to help.

Keeping the relationship intact

This is the part that matters most. A dog who has been nagged, told off and hauled about all through adolescence can arrive at adulthood warier of you, and that is much harder to repair than a patchy recall.

Even on bad weeks, do something your dog loves every day: sniffing, scattered food in the grass, a game of tug, a puzzle or a chew. Let sniffing walks count as exercise, because for a busy adolescent brain they often do more good than running. Our list of easy dog enrichment ideas has plenty of low-cost options.

Notice out loud when your dog gets it right. It is easy to spend this stage only reacting to what goes wrong.

Why this stage is so hard, and why you should be kind to yourself

People who work in rescue commonly report that many dogs handed in are adolescents rather than young puppies or elderly dogs. That is not a guilt trip. It is context: the stage you are finding hard is genuinely hard, and exhaustion or the quiet thought of what have we done is an ordinary experience at this age, not a sign of a bad owner or a bad dog. Most people simply do not talk about it.

Your plan for this week

1. Protect sleep. Build in two or three quiet naps a day in a calm space, with no visitors and no games.
2. Swap one walk for a sniff. Same time out, a fraction of the distance, nose down.
3. Fit a long line to a well-fitted harness, and stop calling recalls you cannot back up.
4. Choose one cue to rebuild. Recall is usually the right one.
5. Remove two temptations from the house, whatever your dog keeps raiding.
6. Book a vet check if the change was sudden, or if appetite, toileting or sleep have changed.
7. Write down one thing your dog did well each day. On hard weeks it helps to see progress.

Common mistakes during dog adolescence

• Treating it as dominance or defiance. Adolescent chaos is a young brain chasing whatever is most rewarding, not a bid for status. Framing it as a contest leads to conflict and erodes trust.
• Using punishment or aversive tools. Harsh corrections, prong, choke or shock collars add fear and pain at the very age fears are forming, and can turn a passing phase into lasting problems.
• Fading rewards too early. This is the time to pay more, not less.
• More and more exercise. Long, fast or repetitive exercise does not fix an overtired dog, and growing joints in large breeds need care.
• Giving off-lead freedom the skills cannot support. Each successful bolt is a lesson learnt.
• Forcing a frightened dog to “face” something. Distance and food work better than flooding.
• Waiting too long for help. Getting support now is quicker than getting it in a year.

When to get professional help

Speak to your vet if the change is sudden or extreme, if your dog seems sore or stiff, if appetite, toileting or sleep have changed, or if you want to talk through the timing of neutering. Pain, ear problems, skin conditions and other medical issues can show up as irritability or “disobedience”, and the timing of neutering is a decision for you and your vet together, as advice varies with breed, size and individual health. Our guide on when to call the vet explains which signs need prompt attention.

Speak to an accredited reward-based trainer or a qualified behaviourist if your dog is growling, snapping or guarding, if fear is deepening rather than passing, if lead reactivity is worsening, or if you have started to dread walks. Our guide to choosing a dog trainer lists the questions to ask so you find someone who uses kind, modern methods.

Adolescence is the last stretch of the puppy year, and our complete guide to your puppy’s first year covers the stages leading up to it.

Sources this guide draws on: Asher and colleagues, “Teenage dogs? Evidence for adolescent-phase conflict behaviour and an association between attachment and puberty in dogs”, Biology Letters (2020); general guidance on reward-based training from veterinary behaviour organisations; standard veterinary guidance on developmental stages in dogs.

Frequently asked questions

At what age do dogs become teenagers?

Most dogs enter adolescence somewhere between about six and twelve months, around the time of sexual maturity. Smaller breeds tend to start earlier and larger breeds later. Many owners notice the change quite suddenly, often over a week or two.

How long does dog adolescence last?

Usually through much of the second year, longer in large and giant breeds. There is no end date; instead, difficult days become less frequent until your dog is reliably easier. Consistent, kind training during the phase helps you come out the other side with a steadier adult.

Why does my dog listen to other people but not me?

Research on guide-dog puppies found adolescent dogs were more likely to ignore cues from their usual carer than from a stranger, then improved again by about twelve months. It is a normal, temporary pattern, not a sign that your dog loves you less. Keep rewards high, sessions short and the relationship warm.

Is my adolescent dog trying to dominate me?

No. Counter-surfing, ignoring cues and general chaos are a young brain following whatever pays off at that moment. Treating it as a challenge to be won damages trust. Manage the environment, make the behaviour you want worth doing, and wait out the stage.

Does neutering stop adolescent behaviour?

Not reliably. Neutering can affect some hormone-driven behaviours, but it does not replace training, and the best timing depends on your dog’s breed, size and health. Talk it through with your vet rather than seeing it as a behaviour fix.

Will my dog go back to how they were before?

In the ways that matter, yes. Their affection, character and training are not gone, and most dogs become recognisable again as they mature, often steadier than before. What you build now still counts, even when it feels like nothing is going in.

Adolescence is a season, not a verdict on your dog or on you. Keep it simple: protect sleep, make good choices easy, reward generously, and you will both reach adulthood with your bond intact. For any sudden or worrying change, your vet is always the right first call.