🐾 Why Sizing Matters
When you’re shopping for gear, apparel, or accessories for your giant dog, “XL” doesn’t always mean extra large enough. That’s why we created this guide to help you choose products that fit comfortably and safely.
📏 How to Measure Your Dog
Use a soft measuring tape and record in inches or centimeters.
| Measurement | Where to Measure | Used For |
| Neck | Around the base of the neck where a collar naturally sits | Collars, harnesses, apparel |
| Chest/Girth | Around the widest part of the chest, just behind the front legs | Apparel, harnesses |
| Back Length | From the base of the neck to the base of the tail | Apparel, jackets, coats |
| Height | From the floor to the top of the shoulders (withers) | Beds, ramps, gates |
| Weight | Weigh your dog on a pet scale or at the vet | Sizing reference only; not precise for all products |
🐶 Typical Giant Breed Ranges (for Reference)
| Breed | Neck (in) | Chest (in) | Back (in) | Weight (lbs) |
| Great Dane | 20–26 | 38–45 | 28–34 | 110–180 |
| Mastiff | 24–30 | 40–50 | 28–36 | 120–230 |
| Newfoundland | 22–28 | 38–48 | 28–34 | 100–150 |
| Saint Bernard | 24–30 | 40–50 | 28–36 | 120–180 |
| Irish Wolfhound | 18–24 | 35–40 | 32–36 | 105–140 |
| Bernese Mountain Dog | 20–26 | 35–42 | 26–32 | 85–115 |
| Leonberger | 22–28 | 38–45 | 30–34 | 110–170 |
🛒 Choosing the Right Size
- Always check the size chart on the individual product page — different vendors size differently.
- If your dog is between sizes, we recommend sizing up.
- For harnesses and apparel, prioritize chest measurement for the best fit.
🍽️ Related Resource: Feeding Chart for Giant Breed Dogs
Want to make sure you’re feeding your giant the right amount for their size, age, and breed?
(Hosted on GiantBreeds.net — opens in a new tab)