Most puppy owners ask us the same question around month six. They want to know the age puppies are the naughtiest at that age because the sweet little furball they brought home suddenly seems to have forgotten every command it ever knew. This is not bad luck, and it is not a training failure on your part. It is a predictable stage every dog goes through, and knowing what to expect makes it far easier to handle.
The Age Puppies Are the Naughtiest, Explained
If you want the short answer, puppy adolescence runs from about 6 to 18 months, according to Cornell University’s College of Veterinary Medicine. Most owners report the roughest stretch falling between 7 and 12 months, and a Newcastle University study found a dip in obedience toward the owner specifically, right around the 8-month mark. This is when hormones shift, independence kicks in, and your dog starts testing every boundary you thought was solid.
Owners describe this stage as raising a teenager. Your puppy knows the rules. It just decides in the moment whether following them is worth it.
Key Takeaway: If your puppy suddenly seems to have forgotten basic commands around 7 months old, that is normal adolescent behavior, not a sign you did something wrong.
The Three Naughtiest Stages of Puppy Development
Puppies do not become difficult all at once. There are distinct stages, and each one brings its own challenges.
Weeks 8 to 16: The Land Shark Phase
This early stage is exhausting for different reasons. Housebreaking accidents happen often, and needle-sharp puppy teeth turn hands, ankles, and furniture into chew targets.
Most owners survive this stage through pure repetition. Consistent potty schedules and plenty of appropriate chew toys make the biggest difference here.
Months 3 to 5: Teething and Testing
Adult teeth start pushing through around this age, matching the general teething timeline vets describe, which ramps up the chewing and nipping again. Your puppy is also starting to test what it can get away with, like jumping on guests or pulling toward every distraction on a walk.
Months 6 to 18: The Naughtiest Puppy Age of All
This is the age most owners point to when they say their puppy is the naughtiest. Selective hearing shows up out of nowhere, and it is not just a feeling. Researchers tracking young dogs found obedience to the owner’s commands dropped around this stage, even though the same dogs still listened fine to strangers. Leash pulling gets stronger. Counter surfing becomes a new hobby.
Your dog has not forgotten its training. It is choosing to ignore it because impulse control has not caught up with its growing independence yet.
Pro Tip: Do not stop training during this stage just because your puppy seems to be regressing. This is exactly when consistent reinforcement matters most.
Why Puppies Get Harder Before They Get Easier
A lot of owners assume something is wrong when a puppy that seemed to be settling down suddenly turns into a chaos machine a few months later. In reality, this is brain development at work.
Adolescent dogs are dealing with a surge of hormones on top of a brain that is still under construction. Veterinary behaviorists describe an underdeveloped prefrontal cortex, the part of the brain responsible for impulse control, working against a fully active emotional center. That combination leads to:
- Sudden bursts of energy with no obvious off switch
- Ignoring commands they clearly know
- Increased reactivity to other dogs, people, or sounds
- A shorter attention span during training sessions
Many trainers, including our team, notice that over-exercising a wired adolescent dog often makes this worse. The theory is that constant high-arousal activity can create an “adrenaline junkie” effect, where the dog gets better at being amped up instead of learning to settle.
Need expert help getting through this phase? Contact KC Dawgz for a free consultation and we will build a training plan around your dog’s exact stage of development.
How to Survive the Naughtiest Puppy Age
You cannot skip adolescence, but you can manage it well. Here is what actually works.
- Go back to basics. Retrain core commands in low-distraction environments before adding real-world challenges back in.
- Allow sniffy walks. Letting your dog use its nose during part of the walk burns mental energy faster than a strict heel ever will.
- Manage the environment. Use crates, baby gates, and closed doors so your puppy cannot practice bad habits when you are not watching.
- Build in forced downtime. Scheduled naps or quiet time in a crate prevent the overtired meltdowns that make bad behavior worse.
- Stay consistent with the whole household. Mixed signals from different family members slow progress significantly.
Key Takeaway: Consistency matters more than intensity. Short, focused training sessions done daily beat one long session done occasionally.
Breed and Individual Differences
Not every dog experiences this age the same way. Some breeds sail through with minor hiccups. Others turn it into a full-time job for their owners.
High-Drive Breeds Feel It the Most
High-energy working breeds, like herding dogs and retrievers, are widely reported by trainers who specialize in this stage to hit adolescence harder and stay in it longer than lower-drive breeds. Their brains and bodies are wired for a job, and without one, that energy comes out sideways.
We see this pattern often in the dogs that come through our Kansas City area programs. A Border Collie mix and a laid-back Basset Hound can be the same age and behave like completely different species.
Signs Your Puppy May Need Extra Support
Some behaviors go beyond typical adolescent naughtiness and are worth addressing early:
- Resource guarding food, toys, or space
- Aggression toward people or other dogs
- Severe leash reactivity
- Anxiety that disrupts daily routines
When to Call In a Professional Trainer
Most puppies work through this stage with patience and consistent handling at home. But some benefit from structured support, especially in a busy household or with a higher drive breed.
Our team at KC Dawgz works with adolescent dogs every day, and we know how to turn frustrating habits into reliable behavior using a balanced, dog friendly approach. Whether you need a single tune up session or a full board and train program, we can meet your dog where they are.
Getting Through It Together
Every puppy goes through a rough patch, and knowing the age puppies are the naughtiest helps you plan for it instead of panicking when it hits. With consistent training, the right amount of structure, and a little patience, your dog will grow out of this stage into the well-mannered companion you know is in there.
If you are in Overland Park, Olathe, or Gladstone and need help managing this stage, reach out to KC Dawgz for a free consultation and let us help you get through the age puppies are the naughtiest with confidence.
