7 Steps to Choose a Harness for a Strong Dog That Pulls

7 Steps to Choose a Harness for a Strong Dog That Pulls

Last Updated: 7 November 2026

Quick Summary

Choose a strong dog harness with a front-clip or dual-clip attachment, because a back-clip alone gives a strong dog something to lean against. Measure chest girth and neck, check the fit in motion, and look for wide padding, metal buckles and a grab handle.

  • A front-clip harness turns the dog gently back towards you rather than restricting it.
  • Measure chest girth at the widest part of the ribcage, just behind the front legs.
  • A harness should fit snugly with room for two fingers under each strap.
  • Stop using a design if you see rubbed skin, bald patches or flinching.
  • Pair the harness with reward-based loose-lead training to change the habit.
Which harness suits a strong puller?BULLYION builds padded no-pull harnesses for powerful breeds, with secure buckles and grab handles.
Shop No-Pull Harnesses

Table of Contents

Why a Standard Harness Fails a Strong Dog That Pulls

A strong dog harness must do more than spread load across the chest, because a standard design never changes the direction of the dog's effort. The dog leans in, the harness takes the weight, and you get dragged along for the ride. The harness is doing its job, but the job is the wrong one.

Think about how a sled dog works. The harness is built so the dog can drive forward with its whole body. Most everyday harnesses were never designed to interrupt a strong dog's forward momentum.

There are three reasons this matters for powerful breeds:

  • Load sits in the wrong place. A back attachment pulls from behind, which encourages a dog to lean into the pressure.
  • Shoulder movement gets restricted. Poorly shaped straps cross the shoulder joint and shorten the stride.
  • Nothing redirects the dog. The dog feels pressure, pushes harder, and the cycle repeats.

A strong dog harness has to do more than hold the dog. It has to change how the pull feels to the dog.

Harness Types and How Each One Handles Pulling

Harness types differ mainly in where the lead attaches and how the straps sit on the body. That single design choice decides whether a harness helps you manage pulling or makes it worse.

Here is how the main designs compare:

Harness type Lead attachment Best for Main drawback
Back-clip Back Calm dogs, tracking, long-line work Encourages leaning into the pull
Front-clip Chest Strong pullers, lead training Can twist if poorly fitted
Dual-clip Front and back Training plus everyday walks More straps to adjust
Escape-resistant Back, with extra straps Dogs that back out of harnesses Slower to put on

RSPCA advice on walking your dog

Front-Clip Dog Harness: Redirection Over Restriction

A front-clip dog harness attaches the lead at the chest. When the dog pulls forward, the pressure turns the dog gently back towards you. That is redirection, not restriction.

The dog can still move, run and sniff. It simply cannot drive forward with the same force. This is why front-clip designs suit strong pullers so well.

What most guides miss is the fit. A front-clip harness only redirects properly if the chest strap sits flat. If it rides up or slips sideways, the dog learns to push through it. The BULLYION® TRINITY heavy duty no pull harness is one option to consider.

BULLYION® TRINITY Heavy Duty No Pull Dog Harness – Staffy & Bully Breeds Tactical Adjustable
BULLYION® TRINITY Heavy Duty No Pull Dog Harness – Staffy & Bully Breeds Tactical Adjustable

Dual-Clip and Back-Clip Designs

Dual-clip harnesses give you both options. Clip to the front for training walks and the back for relaxed sniffing. It is the most flexible setup, though it needs more adjustment to sit right.

Back-clip designs suit calm dogs and long-line work. For a strong puller, a back attachment alone is a poor choice. It gives the dog something to lean against.

How to Measure a Dog for a Harness: Chest Girth and Neck

To measure a dog for a harness, take two measurements: chest girth and neck. Chest girth is the widest part of the ribcage, just behind the front legs. Neck is the base of the neck where a collar would sit. Get these two numbers right and most of the fitting work is done before the harness even arrives.

Use a soft tape measure and keep it snug, not tight. Then:

  1. Stand the dog on a flat surface with all four paws square.
  2. Wrap the tape around the widest part of the chest, just behind the front legs and over the shoulder blades.
  3. Note the number in centimetres.
  4. Measure the neck at its base, where a collar would naturally rest.
  5. Measure both again to check for error.
  6. Compare both numbers to the size chart.

A common mistake is measuring over a thick coat or a bulky collar. Measure against the body, not the clothing. If your dog is between sizes, size up and adjust the straps down rather than squeezing into the smaller size.

Broad-chested breeds often fall between sizes. Size up if your dog sits at the top of a range, then adjust the straps down. Deep-chested dogs can also need a longer chest strap than the chart suggests, so check the adjustment range before you buy. Our size page turns your measurements into the right fit.

Watch out: if the chest girth lands at the very bottom of a size range, the harness may be too loose at the shoulder even when the chest fits, so check the adjustment range on both straps before committing.

How Should a Dog Harness Fit? Checking Fit in Motion

A dog harness should fit snugly with room for two fingers under each strap. But measurements alone do not tell you if a harness fits. You have to watch the dog move.

Handler checking the fit of a dog harness by sliding fingers under the chest strap on a pavement.
Handler checking the fit of a dog harness by sliding fingers under the chest strap on a pavement.

Walk the dog, jog a few steps, and watch for these signs:

  • Straps that slide sideways or twist
  • The chest plate riding up towards the throat
  • A gap at the shoulder that opens and closes as the dog moves
  • The dog shortening its stride or turning stiffly

If you spot any of these, the harness is not fitted correctly. Our guide to the 6 signs your dog's harness doesn't fit walks through each fix in detail.

Padding, Pressure Distribution and When to Stop Using a Design

Padding matters most where pressure lands: the chest plate, the armpits and the shoulder line. Thin straps concentrate force on small areas. That is where chafing and soreness start.

Softcell™ padding is used in the harness range. A Y-shape frame keeps straps clear of the shoulder joint so the dog's gait stays natural.

Watch out: stop using a design if you see rubbed skin, bald patches, or the dog flinching when you reach for the harness. For practical fixes, read our guide on stopping harness rubbing under the armpits.

Escape-Proof Dog Harness Features for Houdini Hounds

An escape-proof dog harness uses more than one strap around the body, plus a snug fit at the neck. Dogs that back out of harnesses need a design with a third belly strap and secure buckles.

Look for these features:

  • A third strap behind the ribcage
  • Metal buckles rather than plastic clips
  • Reinforced stitching at stress points
  • A grab handle for instant control

The BULLYION® HiFLEX no pull harness pairs a padded chest plate with an emergency grab handle.

Pairing Your Harness With Loose-Lead Training

A harness manages pulling. It does not teach a dog to walk politely. The two jobs are different, and you need both.

Reward-based loose-lead training works alongside a front-clip harness by rewarding the dog for staying beside you. Stop walking when the lead goes tight. Move forward again the moment it slackens. Reward the dog for choosing your pace.

A common mistake is relying on the harness alone. Pair the equipment with training and the results hold.

Choosing Your Harness for a Strong Dog That Pulls

Choosing a harness for a strong dog that pulls comes down to a sequence of decisions, not a single feature. Work through them in order and you will narrow the field quickly.

  1. Attachment point. Front-clip or dual-clip for pullers. A back-clip alone gives a strong dog something to lean against.
  2. Fit. Measure chest girth and neck, then check fit in motion. A harness that slips sideways will not redirect the dog.
  3. Padding. Soft, wide padding where pressure lands: chest plate, armpits and shoulder line.
  4. Hardware. Metal buckles and reinforced stitching for strong dogs. Plastic clips are the first thing to fail under load.
  5. Handler control. A grab handle and secure lead attachment. This matters as much as the dog's comfort.

The handler matters too. If you are walking a powerful dog, look for a padded handle you can grip quickly, a lead length that gives you room without losing control, and a harness you can put on without a struggle. A dog that can pull you off your feet needs equipment you can operate one-handed.

A dual-clip design gives you redirection for training and a back clip for calm walks. The BULLYION® HYGGE comfort padded harness at £49.99 combines Softcell™ padding with a Lockforce™ pull-tested buckle.

BULLYION® HYGGE Comfort Padded Heavy Duty Dog Harness With Handle – Staffy & Bully Breeds
BULLYION® HYGGE Comfort Padded Heavy Duty Dog Harness With Handle – Staffy & Bully Breeds

Equipment alone will not teach loose-lead walking. Pair the harness with reward-based training: stop when the lead goes tight, move forward when it slackens, and reward the dog for choosing your pace. A harness manages pulling; training changes the habit. Use both and the results hold.

Our harnesses are tested at our R&D centre in the UK and registered in over 28 countries.


If your dog is strong enough to make every walk a battle, the right harness changes the whole experience. BULLYION builds gear for powerful breeds, with Softcell™ padding to prevent chafing, Lockforce™ pull-tested buckles for security, and grab handles for instant control. Get started with BULLYION and turn every walk into a calm, controlled outing.

Frequently Asked Questions

What type of harness is best for a strong dog that pulls?

A dual-clip harness with a front attachment point gives you the most options. Clip the lead to the front ring for walks where you need redirection, and to the back ring for calmer stretches or long-line work. Look for reinforced stitching, stainless steel hardware and a pull-tested buckle, because a strong dog can put sudden jolts through every joint in the harness. A padded chest plate sits across the sternum.

Is a front-clip or back-clip harness better for a dog that pulls?

Front-clip is the better starting point for a persistent puller. A front-clip dog harness is designed to guide the dog's momentum when it surges forward. Back-clip designs sit behind the shoulders. Many owners end up with a dual-clip harness so they can switch between the two as training progresses.

How do I stop my dog slipping out of its harness?

An escape-proof dog harness needs a snug chest girth, at least four adjustable straps and a buckle that cannot be popped by a twisting dog. Measure the widest part of the ribcage and check the harness sits close without pinching. Test it indoors first: ask the dog to sit, turn and back up while you hold the lead lightly. If any strap gaps more than a finger's width, tighten it before heading outside.

Can a harness make a dog pull more?

A badly fitted back-clip harness can. It distributes pressure across the chest, which some strong dogs brace against like a sled dog. Equipment alone will not fix pulling. Pair the harness with reward-based loose-lead training, and if your dog still lunges or drags after several weeks of consistent work, book a session with an accredited trainer.

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