How to measure your dog
Getting the size right first time means a comfier dog and no hassle sending things back. All you need is a soft tape measure (or a piece of string and a ruler) and a few minutes while your dog is standing calmly. Measure twice, and if you can, ask someone to help with the treats.
The four measurements
1. Neck: for collars
Measure around your dog's neck where the collar will sit, usually the middle of the neck. Keep the tape snug but not tight. Choose the collar size whose range includes your measurement, ideally towards the middle so there's room to adjust either way.
2. Chest (girth): for harnesses, coats and jumpers
Measure around the widest part of your dog's chest, just behind the front legs. For harnesses this is the measurement that decides the size.
3. Back length: for coats and jumpers
Measure along the spine from the base of the neck (where a collar sits) to the base of the tail. Most coat and jumper sizes are based on this measurement. A few makers measure from behind the shoulder blades instead; each product's size guide says which.
4. Nose: for head collars
Measure around the widest part of the muzzle, about 2cm below the eyes, and around the top of the neck just behind the ears.
Checking the fit
- The two-finger rule: once fitted, you should be able to slide two fingers flat under a collar or harness strap. Any tighter can rub; much looser and some dogs can slip out.
- Between sizes? For coats, jumpers and harnesses, size up and adjust down. For collars, choose the size where your dog sits in the middle of the range.
- Deep chests and stocky builds: breeds like Pugs, French Bulldogs and Staffies often need a size up in jumpers and coats compared with their back length.
- Puppies: re-check the fit every week or two while they're growing.
- Breed suggestions are only a guide. Dogs of the same breed vary a lot, so always go by your tape measure.
Still not sure?
Email info@hairydogs.co.uk with your dog's measurements and breed and we'll help you choose.