Adolescence Isn’t Disobedience: Understanding the 7-Month-Old Spaniel Brain
I recently responded to a post about a 7-month-old Cocker Spaniel who was “pulling like a train” and they were asking for a harness that “stops pulling”. Other phrases that kept coming up were ones I hear all the time:
“He’s suddenly forgotten everything.”
“His attention span is like a gnat’s.”
“He’s pushing boundaries and meeting force with force.”
Welcome to canine adolescence.
This phase can feel like all your hard work has unravelled overnight, but what you’re seeing isn’t stubbornness, dominance, or your dog “being naughty”. It’s biology.
The Teenage Dog Brain (or: Why Your Dog Can’t Put the Brakes On)

A 7-month-old dog is roughly equivalent to a 14-year-old human teenager.
Their body is developing rapidly, hormones are surging, and crucially — their frontal cortex hasn’t caught up yet.
The frontal cortex is the part of the brain responsible for:
- Impulse control
- Emotional regulation
- Decision-making
- The ability to pause and think before acting
In dogs, this area doesn’t fully mature until around 18 months of age.
So when we expect a teenage dog to “just make better choices”, we’re asking them to use a part of the brain that quite literally isn’t finished yet.
Be the Swan 🦢 (Even When You’re Screaming Inside)
I often tell clients to be like a swan.
On the surface: calm, graceful, unbothered.
Underneath: paddling like mad, thinking “for goodness sake”, and feeling frustrated.
Feeling frustration is normal. It’s human. It’s part of our emotional repertoire.
But dogs don’t need us to win against them — they need us to be smarter than their nervous system.
Meeting force with force during adolescence often escalates behaviour, because the dog simply doesn’t have the neurological capacity to regulate themselves yet.
What Adolescent Stress Actually Looks Like

During this phase, dogs become more easily frustrated, and stress shows up in ways that often confuse owners.
You might see:
- Scratching in the middle of play
- Yawning when nothing seems tiring
- Shaking off when they’re not wet
- Avoiding things they were previously fine with
- Lunging or barking at familiar sights
- Sudden “out of context” behaviours
These are stress displacement behaviours — signs that the dog’s nervous system is struggling to cope.
When pressure continues, dogs may opt for space-increasing behaviours, such as:
- Pawing at you to make you stop
- Mouthing or grabbing clothing
- Snapping to create distance
This isn’t aggression — it’s communication.
Redirect, Don’t Confront
Instead of challenging the behaviour head-on, I prefer redirection using cues the dog already understands well.
One of my favourites is:
“What’s this?”
It taps into curiosity and makes the dog come towards you to see what they’re missing out on.
If you can teach:
- “Up up” → you can teach “Off”
- “Come and see” → instead of pushing away
Always ask yourself:
What is the opposite of the behaviour I don’t want?
Examples:
- Jumping up → a solid sit on a mat
- Mouthing → stopping and picking up a toy
- Recall issues → working very close for a long time to build value in staying with you
Distance is earned. Adolescents need to relearn proximity.

Puberty = Instincts Switching On
Puberty typically hits between 7–9 months, and this is when a dog’s breed-specific behaviours really start to emerge.
Under pressure or frustration, dogs revert to what they were selectively bred to do.
For example:
- Spaniels like to hold and possess
- Retrievers like to carry things in their mouths
- Guardian breeds may grab and pull down
These behaviours often increase when:
- The dog is frustrated
- The dog doesn’t know what’s being asked
- Training lacks clarity
- Tasks change too quickly
Dogs don’t default to calm thinking under stress — they default to instinct.
Why Frustration Tips Over So Fast (Especially on Lead)
Frustration builds pressure in the nervous system, and pressure needs an outlet.
This is why:
- Dogs are often more reactive on lead than off
- Tension on the lead escalates behaviour
- Lack of movement increases emotional overflow
Under pressure, behaviour can escalate quickly into:
- Barking
- Lunging
- Snapping
Not because the dog is “bad”, but because their coping capacity has been exceeded.

A Note on Harness Battles
If getting equipment on and off has become a battle, you have two options:
1. Change the Equipment
Some dogs struggle with harnesses that go over the head.
A step-in or Velcro harness can remove that stress entirely.
2. Go Back a Step
Slow the whole process down.
- Break it into smaller steps
- Reinforce calm behaviour
- Reduce the “faff”
Sometimes removing the equipment altogether for a short reset helps, because the dog has learned to predict:
“Something uncomfortable or stressful is about to happen.”
If in doubt:
- Change the cue
- Change the equipment
- Start again from scratch
There is no failure in resetting — only information.
The Takeaway
Adolescence isn’t a training problem.
It’s a developmental phase.
Your dog isn’t giving you a hard time — they’re having a hard time.
With clarity, patience, and an understanding of what’s happening inside that teenage brain, this phase doesn’t have to be something you “get through”.
It can be something you guide them through — calmly, consistently, and with empathy.
And yes… sometimes while paddling furiously under the surface 🦢
If you appreciated this post feel free to check out my previous post Help My Puppy Won’t Settle At Night here👈
Before you go you might want to check out my 12 Days Of Woofmas by adding your email to my newsletter sign up page Here to get access to 12 days of canine science right into your inbox there will also be 12 videos to accompany those emails on a private section of this website as well as daily tasks to complete via email – so if you want to keep yourself busy over the Christmas period feel free to sign up now 👍
Love from your friendly neighbourhood dog trainer and behaviourist.
S x












