Dog Harness Size Guide
How to Measure Your Dog for a Harness
Two measurements decide the size. Use a soft tape measure and keep it snug, not tight.
- Chest (girth) — measure all the way around the widest part of the chest, just behind the front legs. This is the measurement that matters most.
- Neck — measure around the base of the neck, where a collar would normally sit.
If your dog falls between two sizes, size up. Our harnesses have wide adjustment ranges, so the larger size will almost always give a better fit than squeezing into the smaller one.
Dog Harness Size Guide
| Size | Neck | Chest | Length | Typical breeds |
|---|---|---|---|---|
| XXS | 20-29cm | 22-41cm | 18cm | Mini Dachshund, Small Puppies, Chihuahua, Yorkie |
| XS | 24-34cm | 26-50cm | 20cm | Mini Dachshund, Pomeranian, Westie, Yorkshire Terrier, Chihuahua, Toy Poodle, Maltese |
| S | 30-45cm | 35-66cm | 23cm | Dachshund, Cavapoo, Jack Russell, Shih Tzu, Bichon Frise, Miniature Schnauzer, Miniature Poodle, Border Terrier, Boston Terrier |
| M | 35-50cm | 40-71cm | 26.5cm | French Bulldog, Cockapoo, Cocker Spaniel, Corgi, Pug, Beagle |
| L | 40-60cm | 55-83cm | 32cm | Labrador, Golden Retriever, Husky, Staffy, Dalmatian, Border Collie, Springer Spaniel, English Bulldog, Bull Terrier |
| XL | 55-83cm | 71-99cm | 34cm | German Shepherd, Rottweiler, Boxer, Great Dane, Dobermann, Chow Chow |
Breed suggestions are a guide only. Individual dogs vary, so always measure rather than choosing by breed.
Getting the Fit Right
- You should be able to slide two fingers flat under any strap.
- The chest strap sits behind the front legs, not in the armpit, so it does not rub.
- Check the fit again after a few wears — straps settle, and puppies grow quickly.
- Re-measure growing dogs every few weeks rather than buying ahead.
Which Harness Style?
Once you have the size, the style depends on how your dog walks. A front-clip attachment helps with pulling by turning your dog gently towards you; a back-clip suits dogs who already walk calmly. Read our no-pull harness guide, or compare a harness against a collar.
Ready to choose? Browse our dog harnesses, or shop by breed for dachshunds, French bulldogs or cocker spaniels.
