Dog Collar Sizing Guide

Proper sizing of products is crucial to the safety and comfort of the dogs and cats wearing them. However, we understand it can be a confusing process for pet owners. Use these visuals as a guide for how to measure dogs properly for a collar, harness, or vest.

How to Measure for Collars and Harnesses

Dog Collar Sizing Guide

A. Neck: Collars should sit up higher on the neck, so measure here when determining collar size.

B. Girth: Wrap the tape measure around the broadest part of the dog’s rib cage.

For optimal fit, ensure that there is enough space for two fingers to easily slide between the collar or harness and your dog’s neck or chest.

Measure first!

Dogs come in all different shapes and sizes and therefore, each has a unique fit. The best way to fit them properly is by using their measurements first and their weight range second.

Pet Sizing1

X-SMALL

Up to 15 lbs

  • Dachshund
  • Shih Tzu
  • Yorkshire Terrier

Collar Size:

8″-12″

Harness Size:

16″-19″

Small

SMALL

20 – 35 lbs

  • Beagle
  • French Bulldog
  • Miniature Schnauzer

Collar Size:

10″-16″

Harness Size:

19″-23″

Medium

MEDIUM

30 – 50 lbs

  • Australian Shepherd
  • Bulldog
  • Shetland Sheepdog

Collar Size:

14″-20″

Harness Size:

22″-28″

Large

LARGE

50 – 80 lbs

  • Boxer
  • German Shepherd
  • Labrador Retriever

Collar Size:

18″-26″

Harness Size:

28″-36″

X Large

X-LARGE

90 – 150 lbs

  • Great Dane
  • Mastiff
  • Rottweiler

Collar Size:

20″-28″

Harness Size:

30″-43″

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