Small Breed Dog Collar Size Guide
By DogTuff | Published: 2026-10-25
Category: Product Reviews
Learn how to measure your small dog's neck and choose the right collar size. Includes fit rules and a look at the Bone Yard Black Collar.
Quick answer
For small breeds, choose a collar that fits snugly but allows two fingers between the collar and your dog's neck. Measure the neck circumference at the widest part and add 2 inches for a safe fit.
Why collar width matters for small dogs
A collar that is too wide can be heavy and uncomfortable on a small dog's neck, while a collar that is too narrow may not hold an ID tag securely. For small breeds, a width of about 15mm (5/8 inch) is a good balance between comfort and durability.
Adjustability is key for puppies
Puppies grow quickly, so an adjustable collar saves you from buying a new one every few weeks. Look for collars with multiple adjustment holes or a buckle that allows incremental sizing. The Bone Yard Black Collar, for example, comes in three sizes and widths, with an adjustable range that suits growing pups.
How to choose the right collar size for your small breed
- Measure the neck: Use a soft measuring tape around the widest part of your dog's neck, just behind the ears. Add 2 inches to this measurement to find the collar length you need.
- Check the two-finger rule: After fastening the collar, you should be able to slide two fingers comfortably between the collar and your dog's neck. If you can fit more than two fingers, it is too loose. If you cannot fit two fingers, it is too tight. Recheck the fit every week for puppies, as they can outgrow a collar quickly.
- Consider width and material: For small breeds, a 15mm (5/8 inch) wide collar is usually ideal. Nylon webbing is lightweight, durable, and easy to clean. Stainless steel hardware resists rust and holds up to daily wear.
Product spotlight
- Bone Yard Black Collar 15mm (5/8" Wide - 9.5-14" Length): The Red Dingo Bone Yard Black Collar is made with premium nylon webbing, solid stainless steel D-rings, and a trademarked buckle bone side release buckle. The 15mm width and adjustable 9.5-14 inch length make it a comfortable, secure choice for small breeds and puppies.
Bone Yard Black Collar 15mm (5/8" Wide - 9.5-14" Length)
Who this collar size works for
Best for
- Small breed adult dogs with neck sizes 9.5-14 inches
- Puppies that will grow into the adjustable range
Not ideal for
- Dogs with necks smaller than 9.5 inches (look for a smaller size or a cat collar)
- Large breeds that need a wider collar for strength
