Is a harness better than a collar for dogs?

Harnesses distribute pressure across the chest instead of the neck, making them safer for dogs that pull, flat-faced breeds (Pugs, Bulldogs) with breathing issues, and small dogs with delicate tracheas. Most vets recommend harnesses for daily walks.

Dog Harness Size Calculator

Find the right harness size from one measurement — your dog's chest girth.

Last reviewed: June 2026

📏 How to measure chest girth

Wrap a soft measuring tape around the widest part of your dog's chest, just behind the front legs. Keep it snug but not tight — you should fit two fingers underneath.

Chest Girth22"

8"55"

Veterinary note: Results are estimates only. Consult your veterinarian for personalized advice specific to your dog's health history and needs.

Harness Size Chart

Size	Chest Girth	Weight	Typical Breeds
XXS	10–14"	Under 5 lbs	Chihuahua, Toy breeds
XS	14–18"	5–10 lbs	Pomeranian, Maltese, small Dachshund
S	18–22"	11–20 lbs	Shih Tzu, Miniature Schnauzer, Pug
M	22–27"	21–40 lbs	Beagle, French Bulldog, Cocker Spaniel
L	27–32"	41–65 lbs	Labrador, Border Collie, Boxer
XL	32–40"	66–90 lbs	German Shepherd, Golden Retriever
XXL	40"+	90+ lbs	Great Dane, Mastiff, Saint Bernard

Harness vs Collar

Harnesses distribute pressure across the chest instead of the neck — making them safer for dogs that pull, have respiratory issues (flat-faced breeds like Pugs and Frenchies), or have delicate tracheas (small breeds). Most trainers recommend harnesses for puppies and daily walks.