Training myths
"He will grow out of it": why puppies rarely do
It is the most comforting thing anyone says about a puppy, and it is usually said about the exact behaviour that is getting worse. The trouble is not age. It is practice. A puppy who gets to jump, pull or grab sleeves every day is not waiting to outgrow it. He is getting better at it. Here is what time really fixes, and what it quietly locks in.
Last reviewed October 4, 2026
Where it comes from
Some puppy behaviour really does fade with age.
The myth has a real origin. Puppies do change as they grow. Chewing driven by teething often eases once adult teeth are in, sleep patterns settle, and a gangly pup gets better at handling his own legs. Owners watch those things fade on their own and reasonably assume the jumping, the mouthing and the pulling will follow. Some of it softens. Learned habits tend not to, because they were never about age in the first place.
What a puppy learns is simple: behaviour that pays gets repeated. Jumping earns a hand on the head. Pulling reaches the interesting smell. Grabbing a sleeve restarts the game. Each repetition is a small training session, run by the puppy, and the lesson sticks. Many dogs then reach adolescence bigger, stronger and bolder, which is when a habit that looked cute in a small puppy becomes a real problem in a full-grown dog.
- Jumping up that earns attention
- Pulling that reaches the smell
- Mouthing that restarts the game
- Counter surfing that finds food
What we do instead
Stop the rehearsal first, then teach the replacement.
Management comes before any exercise. A puppy who cannot practise the habit cannot strengthen it, so we set the house up to make the wrong choice hard: a gate across the kitchen, a crate for rest, a leash on in the house during busy hours, and greetings that happen with four paws on the floor or not at all. None of this is punishment. It simply stops the habit from getting free practice while training catches up.
Then we teach what we want in its place, with markers and rewards first: sit to greet, place while dinner is cooking, a loose leash that earns the walk forward. Puppy Fundamentals is built for this window, with daily one-on-one work on crate comfort, name, place and calm socialization. Growling, guarding or fearful behaviour is different. Do not wait it out, and book a vet check or a professional assessment.
Asked and answered
The questions people ask us.
Do puppies grow out of biting and mouthing?
Mouthing often softens as a puppy matures, but grabbing hands or sleeves that reliably starts a game tends to stick. Redirect to a toy and end play calmly when teeth meet skin. Never ask anyone, especially a child, to hold still while the puppy grabs.
At what age do puppies calm down?
There is no reliable age, and energy alone is rarely the problem. Many dogs become calmer with maturity yet keep every habit they rehearsed along the way. Calm is easier to get when it has been taught and rewarded, not just waited for.
Will a puppy grow out of pulling on the leash?
Rarely on its own, because every pull that reaches something interesting is rewarded. Stop moving when the leash goes tight and reward the position you want. If pulling has a long history behind it, On-Leash Foundations works on loose-leash walking and heel around everyday distractions.
Is it too late to train an adolescent dog?
No. Adolescent dogs learn well, they simply have more history to work against. Starting sooner means less rehearsal to undo, which is why we never suggest waiting to see.
Keep reading
Do not wait it out
Tell us which habits your puppy is practising, and we will recommend the smallest plan that covers them. Book a consultation.
From real owners
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Real Northline dogs