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Dog adolescence training: why 8 months is so hard

Why adolescent dogs stop listening around 6 to 18 months, what a 2020 guide dog study found, and how adolescence training and a 2-week stay can help.

A boy kneels in a grassy park as a German Shepherd raises a paw toward his hand.

What is happening in an adolescent dog’s brain?

Adolescence is a period of fast change, driven by sex hormones and a brain that is still rewiring. In mammals generally, the parts of the brain that chase reward and novelty mature ahead of the parts that put the brakes on, so impulse control lags behind enthusiasm. That is a fair description of most nine-month-old Labradors.

The timing varies with size. Small breeds often reach puberty around six months and settle sooner, while giant breeds can stay adolescent well past their second birthday. Neutering does not simply switch adolescence off, and its timing is a conversation to have with your vet.

What the 2020 teenage dog study found

Researchers at Newcastle and Nottingham followed 69 Labradors, golden retrievers and crosses being raised as potential guide dogs, testing them at five months and again at eight. Their paper, “Teenage dogs?” in Biology Letters, found that at eight months the dogs took longer to respond to a sit cue, but only when the cue came from their caregiver. With a stranger, they behaved as well as before.

Dogs that showed signs of insecure attachment to their caregiver were more likely to show this conflict behavior, which echoes findings in human teenagers. The Newcastle University summary also points out that many dogs are given up to shelters at this age. It is one study, with a specific population, but it matches what trainers and owners describe.

Trainer and puppy working on a long line at the beach

Why it feels personal, and why it is not

The study explains a complaint trainers hear constantly: my dog listens to everyone but me. An adolescent is not being spiteful. The relationship with the main caregiver is where the dog tests boundaries most, the same way teenagers argue most with their parents.

That has a practical upshot. Punishing an adolescent for ignoring you tends to make the relationship feel less safe, which is the very thing linked to more conflict. Making yourself the reliable source of good things, and setting the dog up so the right choice is easy, works with the stage rather than against it. Our page on why dogs listen to the trainer and not their owner picks up that thread.

What regression looks like at this age

Expect a dog who knew sit, down and come at five months to act as though those words are new. Recall usually goes first, because the world outside has never been more interesting. Leash pulling gets stronger as the dog gets bigger, and some dogs go through a spooky phase where a bin bag on the curb is suddenly alarming.

None of this means the earlier training was wasted. The learning is still there; the dog’s motivation and attention have shifted. Lowering the difficulty for a few weeks, then building back up, brings the cues back faster than starting over.

  • Shorten the distance on recall and use a long line outdoors
  • Pay more, and more often, for the cues that matter
  • Use management, gates and leashes, to stop rehearsal of bad habits
  • Give the brain work: sniff walks, food puzzles, short training games

How a two-week stay is used for adolescents

Dogtown’s two-week Advanced board and train was built with this stage in mind. The first part shores up the Foundation skills; the rest is proofing, real-world outings, neutrality around dogs and people, confidence building and structured socialization. Those are exactly the areas where adolescents fall apart.

A worked example: an eight-month-old shepherd mix who will sit at home but drags his owner toward every dog. In a stay, he practices check-ins and loose-leash walking with rising distraction and learns that calm behavior near other dogs pays. The two go-home coaching lessons matter more than usual for an adolescent, because the dog will test the cues again with you, and the second lesson exists to sort out what slipped. Dogs whose reactions come from strong fear may suit a longer behavior-modification program instead; Gabby says so at the assessment.

What you can do at home through adolescence

Keep sessions short and frequent, and end on a win. Practice the cues you care about in easy places before asking for them on a busy street. Use your dog’s daily food as training pay, so the reinforcement rate stays high without extra treats.

Above all, stay consistent. Adolescence is temporary, and dogs whose owners keep calm, kind structure through it usually come out the other side as steady young adults. Our adolescent dog problem page covers the specific behaviors families bring to us.

FAQs

Related questions

At what age is dog adolescence worst?
Many owners notice the biggest dip around eight to ten months, which lines up with the 2020 guide dog study. Large and giant breeds can have a longer, later adolescence.
Is board and train a good idea for an adolescent dog?
It often is, because a stay can proof skills in harder places at the age they tend to break down. The results depend on you continuing the work, which is why Advanced includes two coaching lessons.
Will my adolescent dog grow out of it?
The hormonal and brain changes settle with maturity, but habits practiced during adolescence can stick. Good management and steady training now decide what kind of adult you end up with.
Should I punish my teenage dog for ignoring me?
No. The research links adolescent conflict with less secure attachment, and punishment tends to weaken the relationship further. Make the right choice easy and worth it instead.

More questions? Read the full board & train FAQ

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