What size collar for a Corgi?
Most adult Corgis take a collar somewhere in the small to medium range, reflecting their short but sturdy build, but breed size is only ever a starting point. The reliable way to get a collar that actually fits is to measure your own dog's neck directly rather than buy based on the breed name alone.
How to measure your Corgi's neck
Wrap a soft measuring tape around the base of your Corgi's neck, where a collar would naturally sit, rather than higher up near the head. Keep the tape snug but not tight, then add roughly two finger-widths of extra room to that measurement, which is a widely used rule of thumb for getting a comfortable, safe fit.
If you do not have a soft tape measure, a piece of string or ribbon works just as well — wrap it around the neck the same way, mark where it meets, then measure that length against a ruler.
Why breed-based sizing alone is not reliable
Corgis vary in build even within the breed, and Pembroke and Cardigan Corgis are not identical in size, so a collar sized purely on "Corgi" as a breed name can easily be wrong for your particular dog. Coat thickness also affects how a collar sits and feels, which a generic size chart cannot account for.
A collar that is too loose risks your dog slipping out of it, particularly Corgis with their distinctive body shape, while one that is too tight is uncomfortable and can rub. Checking the fit with the two-finger rule after measuring is worth doing every time, even if you already know roughly what size your dog has worn before.
Checking the fit once it's on
Once the collar is on, you should be able to fit two fingers flat between the collar and your dog's neck without it being loose enough to slide over their head. Recheck the fit periodically, since weight changes and, in a growing puppy, ongoing growth can both affect how a previously well-fitted collar sits.
It is worth doing this check again after a coat change too — a Corgi's coat thickens noticeably for winter and sheds it again in spring, and that seasonal difference can be enough to make a collar feel tighter or looser than it did a few months earlier, even without any real change in your dog's neck size.
The sizes we stock
Everything below is in stock with us, priced with delivery worked out, and packed and posted by hand in the UK.
Real-Time GPS Pet Tracker
A compact GPS tracker that clips to most collars for real-time location, geofence alerts and find-me sound.
£29.99
Smart Bluetooth Tracker Tag (Works with Find My)
A compact Bluetooth tracker that pairs with Apple Find My for global positioning, with left-behind alerts and the option to share tracking with up to six people. Clip it to a pet collar, keys or bag so nothing goes missing.
From£7.99
Flea & Tick Repellent Collar for Dogs & Cats
An adjustable 70cm repellent collar, water-resistant and trimmed to fit either a cat or a dog, giving day-to-day deterrence against fleas and ticks with no drops to apply.
£7.99
Common questions
- What is the two-finger rule for dog collars?
- It means you should be able to comfortably slide two fingers flat between the collar and your dog's neck once it is fastened. This gives enough room for comfort and breathing without the collar being loose enough to slip over the head.
- Are Pembroke and Cardigan Corgis the same collar size?
- Not necessarily. The two varieties differ somewhat in build, and individual dogs within each variety vary too, so it is always worth measuring your own dog's neck rather than assuming a fixed size for either type.
- How often should I recheck my Corgi's collar fit?
- It is worth rechecking every few months, and especially after any noticeable weight change, since a collar that fit well previously can become too tight or too loose as your dog's weight or coat thickness changes.
Sources
Written against guidance published by UK veterinary and welfare organisations. Always confirm specifics with your own vet.
Written by Matt Garnett, who runs Giddy Pets and is a lifelong pet owner — not a vet. This is general information, not veterinary advice, and it cannot replace an examination by the vet who knows your animal. How we write these guides.