Your dog sits beautifully in the kitchen. Ask for the same sit on a busy sidewalk and you may as well be speaking another language. That gap is not stubbornness, and it is not proof that your training failed. Dogs learn in context, which means a cue practised in one place does not automatically work in another. Closing that gap is called proofing — and it may be the most useful thing you ever teach your dog.

Why “He Knows It at Home” Is Not the Whole Story
When you teach a behaviour, your dog learns far more than a word. The kitchen, your body position, the quiet, the time of day and the absence of squirrels are all part of the picture. Change the picture and the question becomes much harder. This is called context-specific learning, and it explains why so many dogs look flawless at home and completely untrained three streets away.
The behaviour has not vanished. It simply has not been generalized yet — and generalization is something you can actively train, in small steps, on purpose.
The Three Ds: Change One Dial at a Time
Think of difficulty as three dials. Turn one up and leave the other two where they are. Turning all three at once is the fastest way to set your dog up to fail.
| Dial | What it means | First small step |
|---|---|---|
| Distance | How far away you are when you give the cue | One step away, then two |
| Duration | How long your dog holds the behaviour | Add 2–3 seconds, not 30 |
| Distraction | Whatever else is competing for attention | A person standing still, then walking |
A Step-by-Step Proofing Plan
- Start from fluency. Only proof a cue your dog already answers promptly in a quiet room. If they are still working out what the word means, keep teaching first.
- Choose the new context. Move to the garden, the driveway, or a quiet corner of a park. Reset your expectations almost to nothing.
- Re-teach rather than re-test. Ask once, reward generously, and treat the new place like day one of training.
- Aim for about four out of five. If your dog succeeds on most attempts, make the next step slightly harder. If they keep missing, make it easier.
- Layer the dials slowly. A short stay while one person walks past at a comfortable distance — not a long stay, far away, in a crowd.
- Vary yourself too. Sit, stand, turn sideways, wear a hat. Your body position is part of the picture your dog learned.
- Finish on a win. End with something easy and reward it well, so the new place keeps good associations.
What Your Dog Is Telling You
A missed cue is information, not defiance. Lip-licking, yawning, a sudden sniff of the ground, or turning away often mean the setup is too hard right now. The answer is rarely to repeat the cue more loudly. It is to shorten the hold, move closer, add space between your dog and the distraction, or go back to the last place the cue worked.
Reward timing matters just as much. Mark the moment your dog gets it right — with a clicker, a marker word, or a fast treat — while the behaviour is still happening, then release them. Reward-based training is the approach recommended by veterinary behaviour organisations precisely because it keeps the dog confident enough to keep trying.
Proofing Without a Formal Session
- Ask for a sit while the kettle boils and the room is busy.
- Ask for a wait at the front door before every single walk.
- Practise a recall in the hallway, then the garden, then the park.
- Ask for a settle on a mat while you cook dinner.
- Reward a check-in the moment another dog appears in the distance.
Proofing is not about drilling harder. It is about making the real world part of the lesson, one small step at a time, until a cue belongs to your dog everywhere — not just at home. Keep sessions short, reward what you want, and let your training travel with you.