Why Is My Dog’s Harness Rubbing? 6 Common Causes and Simple Fixes
A harness should help your dog feel secure, comfortable and ready for everyday adventures - not leave them sore, irritated or trying to wriggle out of it.
If you have noticed rubbing under your dog’s front legs, around their chest or at the neck, don’t panic. Harness rubbing is common, particularly when a harness is new, hasn’t been adjusted quite right or your dog is still growing - but is always down to a poor fit. Usually, a few small changes can make a big difference.
1. The harness is too loose
It can feel kinder to leave plenty of room, but a loose harness can move and twist as your dog walks. That repeated movement is one of the most common causes of rubbing, especially behind the front legs.
Your dog’s harness should sit securely without shifting around their body. You should be able to slide two fingers beneath the straps, but there should not be excessive space or loose fabric.
Our dog harness fitting guide explains exactly how to measure your dog and check their fit at home.
If your dog's harness is worn, and has stretched or lost its shape it may be time to replace it with a new one that fits properly.
2. The harness is too tight
A harness that is too snug can pinch, restrict natural movement and cause friction in the areas that move most - usually the chest, shoulders and armpits.
Watch your dog walk, sit and have a little stretch indoors before heading out. They should be able to move naturally and comfortably, without the harness pulling into their skin or sitting too close behind their front legs.
3. It needs adjusting in more than one place
Most adjustable dog harnesses need a little fitting when they first arrive. It is tempting to adjust just one strap, but the neck and chest should work together to create an even, comfortable fit.
At Bew Dogs, our harnesses are adjustable to suit a wide range of shapes and sizes. Take a moment to check each strap before your first proper walk - particularly if your dog has a broader chest, a slimmer neck or a longer body. It's always worth taking the time to ensure your pooch's new harness fits properly when you first receive it - take a couple of tries if they are becoming impatient & use positive reinforcement (especially with new puppies).

4. Your dog has changed shape
Puppies grow quickly, but - just like us humans - adult dogs can change shape too. A harness that fitted perfectly a few months ago may now feel different after a growth spurt, a change in weight or even a fresh groom.
It is worth rechecking the fit regularly, rather than assuming the same adjustment will always work. Always measure your own dog instead of choosing a size based on breed alone.
5. Damp, dirty or damaged fabric is creating friction
Muddy walks, rain and everyday wear are all part of having a dog — but damp fabric and a build-up of dirt can make a harness less comfortable against the coat and skin.
Allow the harness to dry fully between walks, keep it clean according to the care instructions and check the straps, stitching and hardware regularly. If anything looks damaged or worn, it is best to stop using it and replace it.
We know that dogs' harnesses are often an essential item to fit into a busy, active and outdoors lifestyle. That's why our harness collection is machine washable at 30 degrees - so they can be used for everyday adventures without mud monster fear!
6. Your dog needs a gentler introduction
Some dogs need time to get used to the feeling of a harness, especially if they have had an uncomfortable experience before. If your dog freezes, scratches at it, backs away when you pick it up or seems reluctant to walk, start slowly.
Try short, positive sessions at home with treats and praise, then build up to a few minutes outside. The goal is for the harness to become an ordinary part of heading out on a lovely walk - not something they dread.
Signs your dog’s harness may be rubbing
Check your dog after the first few walks, particularly around the chest and behind the front legs. Look out for:
- Red or irritated skin
- Thinning fur or hair loss
- Repeated scratching or licking
- Reluctance to walk, run or put the harness on
- A harness that twists or moves as they walk
If your dog has broken skin, swelling, ongoing irritation or seems in pain, remove the harness and speak to your vet before using it again.
The right fit makes all the difference
A well-fitted harness should be secure enough for everyday walks, while still allowing your dog to sniff, trot, play and explore comfortably. It should look beautiful, of course - but comfort is always our top priority.
Explore the Bew Dogs harness collection, or send us your dog’s chest measurement, weight and breed at hello@bewdogs.co.uk if you would like a little help choosing their correct size and ensuring a perfect, rub-free fit.