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How to stop your dog lunging at other dogs

Updated October 10, 2026. Based on published research on reward-based training. Not reviewed for your individual dog by a trainer, behaviorist or vet.

A calm, reward-based plan for dogs who bark and lunge at other dogs on walks, built on distance, food and small steps.

Why dogs lunge on the leash

A dog who barks and lunges at other dogs is usually not “being bad”. Most often the dog is scared (“go away before you get closer”) or frustrated (“I want to get over there and I can’t”). Some dogs are a mix of both. The leash matters too: your dog cannot move away or approach in a normal dog way, so a big display is the only option left.

The good news is that the same approach helps both fear and frustration: change how your dog feels about seeing another dog, at a distance your dog can cope with, one small step at a time.

Step 1: Stop the rehearsals (management)

Every big reaction is practice. It also fills your dog with stress hormones that take time to settle. So before any training, cut down the number of reactions:

• Walk at quiet times and in quiet places, even if that means a short drive to an empty field or a business park on a weekend.
• Use distance freely. Cross the street, step behind a parked car, or turn around early. Leaving is not failing.
• Use a well-fitted harness, ideally one with a front clip, so a sudden lunge does not pull on your dog’s neck.
• Skip dog parks and on-leash greetings while you work on this.
• Learn an emergency U-turn (see the emergency U-turn) so you can leave fast without a fuss.

Step 2: Find your dog’s threshold distance

Your dog’s threshold distance is the distance at which they notice another dog but can still think: they glance, they can take food, they respond to their name. Closer than that, they “go over threshold” and the barking starts. What is threshold in dog training? explains how to spot it.

Write the distance down. A typical starting point might be “across the street” or “half a football field away”. The exact number matters less than knowing it, because every session starts a little farther away than that.

Step 3: Pair the other dog with great food

This is called counter-conditioning: other dogs start to predict something wonderful.

1. Stand comfortably beyond your dog’s threshold distance, somewhere another dog will appear (a quiet park edge, or a friend’s calm dog on a walk).
2. The moment your dog sees the other dog, start feeding small, soft, very tasty treats, one after another.
3. When the other dog leaves view, the food stops.
4. Do this for a few short repetitions (three to five is plenty), then end while it is going well.

The order matters: dog appears, then food. Over many sessions your dog learns “another dog means chicken” and starts to look to you, expectant, when one appears. That look is your sign of progress.

If your dog will not take food, you are too close or your dog is too stressed. Add distance and keep it shorter next time.

Step 4: Change one thing at a time

When your dog is relaxed at one setup for several sessions in a row (looking, then looking back to you, eating happily), make one thing a little harder:

• a little closer, or
• a moving dog instead of a still one, or
• two dogs instead of one.

Never change two of these at once. If a session goes badly, go back to the last easy step and add distance. A step back is part of the plan, not a setback. Desensitization and counter-conditioning goes deeper on the “one variable at a time” rule.

Step 5: Watch for bad days

Stress adds up. A dog who had a scare in the morning may react on the evening walk to a dog they usually ignore. This is called trigger stacking. After a big reaction, give your dog a decompression day or two of easy, quiet, sniffy outings.

What progress looks like

Progress is rarely a straight line. Look for trends over weeks:

• your dog notices dogs at a closer distance without reacting;
• reactions are smaller and shorter;
• your dog recovers faster (seconds instead of minutes);
• your dog looks at you when a dog appears.

That is why a log matters: on a hard day, the numbers remind you how far you have come.

Unwoofled uses reward-based methods only. The American Veterinary Society of Animal Behavior (AVSAB) 2021 position statement on humane dog training recommends reward-based training and advises against aversive and punishment-based methods, because they can increase fear, stress and aggression.

This article is training education, not veterinary advice. Medication is a decision for your veterinarian.