Your puppy didn’t forget their training, so nothing you taught them has disappeared and you haven’t done anything wrong.
Somewhere between six and twelve months, many guardians reach the same conclusion anyway. The recall that worked from across the yard stops working, polite greetings turn back into jumping on visitors, and cues your dog knew perfectly at four months now get a long, blank stare.
If your puppy suddenly stopped listening, you’ve most likely hit adolescence, and it’s the stage nobody prepares people for.
So, What’s Actually Happening?
Adolescence in dogs generally runs from around six months to eighteen months, with the hardest stretch usually falling between eight and twelve months, and larger breeds experience adolescence longer than smaller dogs.
A 2020 study published in Biology Letters tested 69 Labradors, Golden Retrievers, and crosses of the two at five months and again at eight months, asking each dog to sit. At eight months, the dogs took longer to respond to their own guardian and were more likely to ignore the cue over and over, which is the part every guardian of a teenage dog recognizes.
Those same dogs responded better to a stranger at eight months than they had at five, and in a separate group of 285 dogs, guardians rated trainability lowest around adolescence while an unfamiliar trainer rated the same dogs as more trainable. So if it feels like your dog listens to everyone except you, that’s a real pattern and not your imagination.
Hormones explain a good part of it,
Shifting how interesting other dogs and new smells become, and your dog’s ability to hold back an impulse is still developing on top of that. The researchers also found that punishing your dog or shutting them out during this stage can make things worse, which matters for what you do next.
The reassuring part is that this phase has an end date. The training you did hasn’t gone anywhere, it’s just hard for your dog to reach right now.
6 Signs Your Puppy Has Hit Adolescence
These rarely show up one at a time, so if two or three of them look familiar, you’re in the right place. It’s the average experience that novelty is superior to all else and your adolescent dog’s processing time literally slows down, affecting everything you do with your dog on a day-to-day basis.
Recall falls apart first: It’s usually the earliest casualty, and the most alarming one.
Known cues get ignored: Your dog isn’t confused, they’re just not able to pay attention the way they could.
Old habits come back: Counter surfing, chewing, and jumping often resurface after months of being handled.
Other dogs become fascinating: Meanwhile, you become considerably less interesting than you used to be.
Settling gets harder: Energy spikes without warning, and the comedown takes much longer now.
Familiar things suddenly seem scary: A trash can, a neighbor, a sound they’ve heard all their life.
The Fear Period Nobody Warns You About
Many dogs go through a second fear period somewhere between six and fourteen months, where things they were previously fine with start to worry them.
It can look like your dog going backwards, yet it’s a normal developmental stage. What matters is how you handle it, meaning you add distance, let your dog look from somewhere comfortable, and avoid pushing them toward whatever worried them. Pushing your dog through it at this age is how a temporary worry turns into a lasting fear.
This is the stage where reading your dog’s body language becomes your most useful skill, because a dog who gets space the moment they look uncomfortable rarely needs to say it any louder.
What to Do While You Wait It Out
The approach is less about new training and more about protecting what you built.
- Make everything easier again.
Make it almost too easy for a while, so quiet rooms, a few steps of distance, and delicious dog treats for the simplest cues. That isn’t starting over, it’s reminding your dog that listening still pays.
- Use a long line outdoors.
Adolescence is the worst time to find out your recall has gaps, so a 15- to 30-foot line keeps your dog safe while you rebuild it. Our guide on teaching your dog to come when called covers the whole process.
- Manage what you can’t train yet.
Clear the counters, gate off the rooms that cause trouble, and stop asking for cues your dog can’t deliver right now, because every failed recall in the backyard can teach them that their recall cue is irrelevant.
- Keep meeting their needs.
Sniffy walks, chews, and short training games do more for an adolescent dog than hard exercise, and a dog whose brain is busy is far less likely to go looking for something to do.
- Don’t get tougher.
When nothing seems to work, getting tougher feels like the obvious next step, yet it harms your relationship right when your dog needs it most, and the researchers behind that Biology Letters study found the same thing, that punishment during this stage can make matters worse.
- Keep socializing them.
Positive exposure shouldn’t stop at four months, and adolescent dogs still benefit from meeting calm dogs and seeing new places, as our blog post on what socialization actually means explains.
8 Top Questions About Adolescent Dogs
Q. When does dog adolescence start?
A. Usually around six months, give or take, with the most noticeable changes appearing between eight and twelve months for most dogs.
Q. How long does the teenage stage last?
A. Most dogs mature somewhere between eighteen months and two years, and larger breeds often take a little longer to get there.
Q. Did my puppy forget everything I taught them?
A. No and that’s the good news! Everything you taught is still there, it’s just harder for your dog to reach right now, which is exactly why making things easier for a while works so well.
Q. Is my dog being stubborn or testing me?
A. Neither, and that way of thinking usually sends people in the wrong direction. Your dog is dealing with hormones and a little brain that’s still developing, which can look a lot like attitude without actually being it. Your dog isn’t trying to give you a hard time, they’re having a hard time!
Q. Should I be stricter during this stage?
A. There’s a useful kind of strict and an unhelpful kind. Being more consistent and clearer about your rules helps a lot, while being tougher on your dog often costs you progress, so use gates and leashes to prevent trouble and keep the training side light.
Q. My adolescent dog is suddenly scared of things, is that normal?
A. Very common and many guardians are caught off guard by it because nobody tells you a second fear period is coming. Back off, give your dog space, and let them decide when they’re ready to get closer.
Q. Will neutering fix the behavior?
A. It isn’t a behavior solution, and timing is a conversation for your vet, who can weigh your dog’s health and development alongside anything behavioral.
Q. Is it worth doing a class at this age?
A. Often it’s the best time for one, because an adolescent dog practicing skills around other dogs with support is exactly what the stage calls for.
You Don’t Have to Get Through This Alone
If you’ve read this far, you’re already doing the thing that matters most, which is trying to understand what’s going on instead of assuming your dog has turned on you.
This stage does end, and the dog waiting on the other side is usually the one you’ve been working toward all along. The guardians who come through it happiest are the ones who managed carefully, kept training light, and stopped expecting an eight-month-old to behave like a finished adult.
If you’d like company through it…
Our Adolescent Socials run every other Friday at 6:15 p.m. and give teenage dogs a chance to play and practice social skills in a supervised setting, while Basic Manners rebuilds the foundations with support, running 6 weeks for dogs over 6 months with one 50% scholarship available every series.
Teenage dogs are welcome exactly as they are, zero perfection expected, and we’re an easy drive from Portland, Troutdale, Damascus, Happy Valley, and Fairview.
