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Dog Size Chart
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2 Hounds Design Side Release (Buckle) Collar / Buckle Martingale size chart (in & cm)

2 Hounds Design publishes 6 sizes for the Side Release (Buckle) Collar / Buckle Martingale, sized by neck (largest part). The chart runs from 7 to 34 in17.8 to 86.4 cm.

Source: 2 Hounds Design official size chart, checked Nov 4, 2026. Read from the maker's own chart image on that page.

The full 2 Hounds Design Side Release (Buckle) Collar / Buckle Martingale chart

Exactly as 2 Hounds Design publishes it. Use the in / cm toggle at the top of the page.

2 Hounds Design Side Release (Buckle) Collar / Buckle Martingale published size chart
SizeNeck
XS7–11 in17.8–27.9 cm
SM10–14 in25.4–35.6 cm
MD14–18 in35.6–45.7 cm
LG16–20 in40.6–50.8 cm
XL20–26 in50.8–66 cm
XXL26–34 in66–86.4 cm

Note: Read from the maker's buckle-collar chart image. 2 Hounds uses a separate chart (neck + head measurements) for its slip-on Martingale collars; not transcribed.

If your dog is between two sizes

2 Hounds Design publishes no between-sizes guidance for the Side Release (Buckle) Collar / Buckle Martingale, so this site will not invent one. Between sizes. Check the maker’s chart before you buy.

This site treats a measurement within 1 in of the edge of a size, or inside two sizes at once, as between sizes, and shows both. Work it out with the collar calculator, or read how to measure your dog.

Popular breeds on the 2 Hounds Design Side Release (Buckle) Collar / Buckle Martingale chart

10 of the most popular breeds that have a published neck girth, mapped onto this chart. Only 57 of 127 breed records have a girth at all, so this is a sample, not a ranking. A breed range is a range: two dogs of the same breed can land in different sizes, so measure your dog.

Popular breeds and the 2 Hounds Design Side Release (Buckle) Collar / Buckle Martingale size their published girth falls in
BreedTypical neckSize on this chartHow it was worked out
French Bulldog13–18 in33–45.7 cmSM to LG (3 sizes)Measure your dog’s neck to pick one.by neck girth
Labrador Retriever17–23 in43.2–58.4 cmMD to XL (3 sizes)Measure your dog’s neck to pick one.by neck girth
Golden Retriever16–24 in40.6–61 cmMD to XL (3 sizes)Measure your dog’s neck to pick one.by neck girth
German Shepherd Dog18–24 in45.7–61 cmMD to XL (3 sizes)Measure your dog’s neck to pick one.by neck girth
Dachshund (Standard)12–16 in30.5–40.6 cmSM to LG (3 sizes)Measure your dog’s neck to pick one.by neck girth
Poodle (Standard)15–20 in38.1–50.8 cmMD to XL (3 sizes)Measure your dog’s neck to pick one.by neck girth
Beagle13–17 in33–43.2 cmSM to LG (3 sizes)Measure your dog’s neck to pick one.by neck girth
Rottweiler20–26 in50.8–66 cmLG to XXL (3 sizes)Measure your dog’s neck to pick one.by neck girth
Cavalier King Charles Spaniel12–15 in30.5–38.1 cmSM or MDby neck girth
Yorkshire Terrier8–11 in20.3–27.9 cmXS or SMby neck girth

Where a breed’s published girth reaches across three or more sizes, the first and last are shown with the count. This site will not pick one of them for you.

How to measure for this collar

2 Hounds Design sizes this collar by neck (largest part).

Run a soft tape around the widest part of the rib cage, just behind the front legs, and keep it snug but not tight. Two fingers should slide under it. Measure twice: a tape that has slipped an inch is the single most common reason a size is wrong.

A number off this chart is where to start, not a fitting. Measure your dog and check 2 Hounds Design’s own current chart before you buy.

Full guide: how to measure your dog

2 Hounds Design Side Release (Buckle) Collar / Buckle Martingale

Buy links are off. When they are on, this box will hold a labelled affiliate link and nothing else will move on the page.

Sizes here come from the maker’s own chart, not from any retailer.

Charts that cover a similar range, if this one is too small or too large for your dog.

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