Snazzy Pooch Size Guide
Dog Harness & Collar Size Guide – Find the Perfect Fit
Whether you’re shopping for a personalised dog harness or a faux leather collar, getting the right size is key for comfort and safety. Our breed-specific UK size guide helps you find the best fit based on weight, neck and chest measurements — with breed tips and an option for Other (Not Listed).
How to Measure Your Dog
- Neck: Measure around the base of your dog’s neck where a collar would sit.
- Chest: Measure the widest part of the chest just behind the front legs.
- Weight: Use an accurate scale (estimate if needed).
Which Product Are You Buying?
Personalised Harnesses: Sized by neck & chest.
No-Pull & Comfort Harnesses: Sized mostly by weight.
Step-In Harnesses: Sized by weight & chest width.
Faux Leather Collars: Sized by neck.
Personalised Collars: Sized by neck.
Still Not Sure? Try Our Interactive Tool
Use the widget below to get instant recommendations based on your dog’s breed, neck, chest, and weight. If in doubt, always size up for comfort.
Find the Perfect Fit
⚠️ Please note: All measurements are a guide based on UK breed averages. If you’re unsure, always measure your dog. Sizes may vary by 1–3cm. If between two sizes, we recommend sizing up for comfort.
Breed-Specific Size Tips (UK Favourites)
Labrador: Broad chest and powerful shoulders; many Labs keep filling out until 18–24 months. If training a puller, a front-clip no-pull harness improves control. Check chest room over winter coats.
Staffordshire Bull Terrier: Muscular neck and deep chest. Choose sturdy, padded harnesses and avoid rubbing under the forelegs. If between sizes on chest, go up.
French Bulldog: Stocky frame with short neck. Avoid pressure on the throat; a Comfort Fit harness spreads load across the chest. Watch chest width carefully.
Dachshund: Long backs and narrower fronts. Step-In harnesses help keep pressure off the spine. Ensure the chest strap sits lower and does not rub the underarm.
Cockapoo & Cavapoo: Fluff can hide fit. Re-measure after grooming. Adjustable Step-In or No-Pull harnesses suit energetic walks.
Golden Retriever: Feathered coats need adjustability. No-Pull or Comfort Fit works well for adolescence when pulling is common.
Beagle: Active scent hounds; choose secure Step-In or Comfort Fit. Measure snug to prevent backing out when following a scent.
Jack Russell: High-energy and surprisingly strong. A snug Step-In or No-Pull harness helps control zig-zagging. Double-check chest fit.
Shih Tzu & Chihuahua: Small frames; light hardware and soft webbing are key. Avoid bulky fittings near joints.
Border Collie & German Shepherd: Athletic, working builds. Front-clip options assist with heel training. Coats change seasonally — re-check fit every few months.
Dog Size Guide FAQs (UK)
How do I measure my dog for a harness?
Measure the neck where a collar sits and the widest part of the chest behind the front legs. Keep the tape snug but not tight.
What size collar does my dog need?
Match your dog’s neck measurement to our collar size ranges. If between sizes, choose the larger for comfort.
Do dogs in the UK need engraved collars by law?
Yes. The Control of Dogs Order 1992 requires a collar & ID tag with the owner’s name and address when in a public place.
Which harness style is best for my breed?
Active pullers often benefit from a front-clip no-pull harness. Smaller breeds may prefer step-in styles. Use the tool above for a tailored suggestion.