In short: a front-clip no-pull harness generally reduces the force with which your dog pulls, because it turns them towards you. It is an aid, not a solution: without lead-walking training, many dogs keep pulling. Used well, it is a good transition tool, gentler on the neck than a collar.
A dog who pulls on the lead is very common. In a survey of 2,531 owners in the UK and Ireland, 82.7% said their dog pulled (Townsend et al., 2021). “No-pull” harnesses promise to solve the problem. How good are they really?
How does a no-pull harness work?
The term mainly covers harnesses where the lead clips onto the chest (front ring) rather than the back. When your dog moves faster than you, the tight lead pulls the chest to one side: your dog turns slightly towards you instead of charging straight ahead. They can no longer pull with their full weight, as they would with a pulling harness.
Some models add a strap that tightens around the chest when the dog pulls. The principle is then different: it is discomfort that discourages. Here we are talking about front-clip harnesses.
What studies say
- Less pulling force with a front clip. In 2024, an American study (Johnson and Wynne, PeerJ) used a sensor to measure the force on the lead from 23 shelter dogs, each walked for 5 minutes with four types of equipment. The dogs pulled significantly more with a martingale collar than with a front-clip harness. The authors found no clear evidence of poorer welfare with either.
- More pulling with a back clip. In 2021, a study of 52 dogs (Shih et al., Frontiers in Veterinary Science) observed that, to reach food, dogs pulled harder and for longer with a back-clip harness than with a collar.
- Still a minority choice. In the Townsend et al. survey, 59% of owners used a flat collar, 43.1% a back-clip harness and only 11.2% a front-clip harness.
Limits: these studies involve few dogs, often in shelters, on short supervised walks. They show a trend, not a guaranteed result for your dog.
What a no-pull harness does not do
- It does not train your dog. It limits pulling force, but your dog does not learn that a loose lead is more rewarding.
- It is not suitable for every use. For canicross or bikejoring, you need a pulling harness instead.
- On its own, it does not prevent escapes: a dog who backs up suddenly can get out of a badly adjusted harness.
- It can have drawbacks: the lead can get under the legs, and a badly fitted harness can hinder shoulder movement (Lafuente et al., 2019).
Using it well: the 5-point method
- Adjust it carefully. The front ring should sit in the centre of the chest, not to one side. If the harness twists, read our article on a harness that twists.
- Use a fixed lead of about 1.5 to 2 m, not a retractable one, and hold it loosely.
- Don’t pull back. When the lead tightens, stop. Set off again as soon as the lead goes slack.
- Reward the right position: give a treat at the level of your leg when your dog walks beside you on a loose lead.
- Change direction calmly when they start to pull: they learn to follow your movements.
With a front clip, the lead sometimes catches in the front legs. Our solutions are in The lead gets under the legs with a front clip.
How do you know the harness suits your dog?
- Your dog walks and trots normally, without shortening their stride.
- No redness or hair loss under the legs or on the chest after the walk.
- The harness stays centred.
- Pulling decreases over the weeks as you work on lead walking.
If your dog still pulls just as hard after several weeks, or pulls towards other dogs or people, help from a dog trainer using positive methods is often more effective than changing equipment.
Frequently asked questions
Which harness for a dog who pulls hard?
A well-fitted front-clip harness, sometimes with a double-ended lead (front and back) for more control. Avoid sports pulling harnesses.
Is it better than a collar?
For a dog who pulls, yes: the neck does not take the force of the lead. We compare the two in Harness or collar: which should you choose?
Do you have to keep it for life?
Not necessarily. Once your dog walks on a loose lead, you can clip the lead to the back ring or keep the front clip for difficult situations.
You can compare our two harness models, their attachments and sizes.
Sources
- Johnson A. C., Wynne C. D. L. (2024). Comparing efficacy in reducing pulling and welfare impacts of four types of leash walking equipment. PeerJ, 12, e18131.
- Shih H.-Y. et al. (2021). Dog pulling on the leash: effects of restraint by a neck collar vs. a chest harness. Frontiers in Veterinary Science, 8, 735680.
- Townsend L. et al. (2021). Owner approaches and attitudes to the problem of lead pulling behaviour in pet dogs. University of Edinburgh.
- Lafuente M. P., Provis L., Schmalz E. A. (2019). Effects of restrictive and non-restrictive harnesses on shoulder extension in dogs at walk and trot. Veterinary Record.