Why Your Dog “Forgot” Their Training

If your dog suddenly seems like they’ve forgotten everything you taught them—sit, come, don’t jump on guests—you’re not alone. It can feel frustrating, confusing, and maybe even a little personal. But here’s the truth:

Your dog didn’t forget. Their brain just hit the “teenager phase.”

The Canine Teenage Brain

Dogs go through a stage called adolescence, usually between about 6 months and 2 years old (depending on the dog). During this time, their brain is still developing—especially the parts that control decision-making, impulse control, and focus.

Think of it like a human middle schooler. They know the rules… they just don’t always follow them.

Your dog’s brain is doing something similar:

• They’re more easily distracted

• They’re more interested in the environment

• They may test boundaries

• They may seem less responsive to cues they already know

This isn’t stubbornness. It’s development.

What’s Actually Happing in Their Brain?

During adolescence, your dog’s brain is going through big changes:

• The reward system becomes more active (everything exciting feels extra exciting)

• The “thinking” part of the brain is still catching up

• Hormones can increase impulsive behavior

So when you call your dog and they ignore you to chase a squirrel, it’s not because they forgot “come.” It’s because, in that moment, the squirrel feels way more important.

Why Training Seems to “Disappear”

Training doesn’t vanish—but performance can drop during this stage.

Skills that were solid at home might fall apart:

• On walks

• Around other dogs

• When guests come over

• In new environments

This happens because adolescent dogs struggle to generalize (apply skills in different situations) and focus under distraction.

In other words, your dog might know “sit” in your living room—but outside? That’s a whole different level.

What You Should Do Instead

This stage isn’t a failure—it’s a training opportunity.

Here’s how to support your dog through it:

1. Lower Your Expectations (Temporarily)
Go back a step if needed. Make things easier so your dog can succeed.

2. Practice in Different Places
Dogs don’t automatically understand that “sit” means the same thing everywhere. Practice in new environments slowly.

3. Reinforce, Reinforce, Reinforce
Reward the behaviors you want—often. Adolescent dogs need reminders that listening pays off.

4. Manage the Environment
Don’t set your dog up to fail. If you know squirrels are too tempting, use a leash or increase distance.

5. Be Consistent
Mixed messages slow learning. Keep cues and expectations clear.

The Good News

This phase doesn’t last forever.

With patience, consistency, and a little humor, your dog will grow into their brain. The training you’ve done is still there—you’re just helping it become stronger and more reliable.

Final Thought

Your dog didn’t forget their training.

They’re just a teenager… with four legs, big feelings, and absolutely no regard for your schedule.

And just like human teens, they need guidance—not punishment—to grow into their best selves.