Four decisions, in this order. Fit: two fingers between collar and neck, and for a sighthound measure the head, not just the neck. Width: wide enough to spread the load, narrow enough not to fight the jawline. Material: BioThane for wet dogs, rope or paracord for daily walkers, wool or leather for comfort and looks. Type: flat, half check or slip, depending on how you walk. Colour last.
Choosing a dog collar looks like a shopping problem and is actually a measuring problem. Every collar on the market claims to be strong, comfortable and best. Almost none of them tell you the one thing that decides whether your dog is comfortable in it, which is whether it fits and whether the width suits the neck it is going on.
I make collars to order in Oxford, one at a time, which means I get asked the fit questions before the thing exists rather than after it arrives. These are the questions that actually come in, answered in the order you need them.
How tight should a dog collar be?
Snug, not tight. The two-finger test is the standard and it works: you should be able to slide two fingers flat between the collar and your dog's neck, with a little resistance. If the collar spins freely round the neck it is too loose. If it presses a visible channel into the coat it is too tight.
Two things people get wrong here. The first is measuring over a thick winter coat and then wondering why the collar swims in June. Measure against the neck, not against the fluff. The second is buying to the neck measurement exactly, with no allowance. Measure the neck snug, then add 2cm to 3cm for the ordering size. The measuring guide walks through it with a tape measure and a dog that will not stand still, which is the realistic scenario.
Fit also drifts. Puppies obviously, but adult dogs change through a winter coat, a diet or a year of getting older. Taking the collar off at home and putting it back on is the habit that makes you notice.
What width dog collar should I choose?
Width is the most under-discussed spec on a dog collar and it changes how a collar feels more than the material does. A wider collar spreads any load across more of the neck, which is more comfortable under tension. Too wide for the dog and it fouls the jaw and the shoulders, and the dog carries its head differently to avoid it.
For a sense of scale, here is what I build to. The Classic wool collar is 34mm of woven wool over a 19mm strap, which is a generous width for a medium to large dog without being a statement. The wool Sighthound goes to 43mm, because on a whippet or a lurcher width is a safety requirement rather than a preference. The Mini comes in at 20mm of wool over a 16mm leather or 16mm BioThane strap, because a heavy collar on a small dog is a genuinely bad time for the dog.
The rule of thumb: on a small dog, keep width and hardware light. On a large dog, go wider than you think. On a sighthound, width is not optional.
Which material is right for your dog?
| Material | Water and mud | Against the coat | How it ages | Verdict |
|---|---|---|---|---|
| BioThane | Best. Wipes clean, holds no smell | Smooth, no nap to trap grit | Barely changes | Swimmers and mud. The unsentimental choice |
| Paracord over a BioThane strap | Good. Dries fast | Soft weave, light | Colour holds, weave settles | The all-rounder. Adjustable and hard to fault |
| Rope | Good. Dries quickly | Rounded, sits in the coat | Softens with wear | Daily walkers who want something better looking |
| British wool | Light rain only | Best. Springs back, no crease | Gets better looking | Comfort and looks. Not the river collar |
| Leather | Avoid submersion | Softens to the neck over months | Improves for years | The long game. Buy once, keep it dry |
If you want the shortest possible version: the paracord collar on a BioThane strap is the one I sell most of and the one I would put on an unfamiliar dog, because it is adjustable, light and copes with weather. If your dog swims, the full BioThane collar is the honest answer. If the collar is meant to be looked at as well as used, the Greenwich Yarn rope collar or a classic leather collar are the two I would choose between.
Which collar type suits how you walk
Flat collar. The default, and correct for the vast majority of dogs. A buckle or side-release closure, a D-ring for the lead and the tag, and nothing clever going on. If your dog walks reasonably and does not back out of things, stop here.
Half check. A collar with a short chain or strap section that closes a limited amount under tension and cannot close further. It gives a dog that occasionally reverses out of a flat collar something it cannot slip, without becoming a choke. The half check BioThane collar is the version I make most.
Slip collar. A separate thing again, with its own technique and its own risks. It belongs to training rather than to daily wear, and it is covered properly in the slip lead guide rather than here.
Sighthound collar. Not a style choice. See below.
Sighthounds, small breeds and everything in between
Sighthounds. Whippets, lurchers, greyhounds and Italian greyhounds have a head narrower than their neck. A standard collar sized to the neck will come straight over the head the first time the dog backs up or spooks, which is the moment you least want it to. A wide-profile collar sits between the head and the widest part of the neck and cannot pass over the skull. Measure the widest point between skull and shoulders, not just the neck. The Cotswold Rambler is the BioThane version at 38mm; there is a fuller range in sighthound collars, including leather and wool.
Small breeds and dachshunds. Width and hardware weight matter more than anything else. A collar that would be unremarkable on a spaniel is a burden on a chihuahua. Keep to 16mm and light fittings. The small breed collars are built to those proportions rather than being scaled-down versions of the standard.
Working and sporting dogs. BioThane for wet and mud, paracord or rope for dry. Both take daily abuse without complaint.
Dogs with sensitive skin. Wool sits more kindly against a coat than anything synthetic, and a woven cotton collar is the next best thing if wool is not for you. The full range is in dog collars.
Hardware, stated properly
Hardware is where collars quietly get cheapened, and it is worth knowing what you are choosing rather than picking a colour.
Solid brass is brass all the way through. Scratch it and there is brass underneath, and it polishes back. It is what every fitting is made from on the Sheep Shed, the Cotton Mill, the leather range and the Greenwich Yarn collars. On the customisable pieces you choose the fitting yourself, and where you pick a plated finish the buckle is plated over steel. Nickel is a plating, and the base metal decides how it ages: my nickel-plated snap hooks are plated over solid brass, while a nickel-plated buckle on a customisable piece is plated over steel, where the plating is doing the corrosion protection, and the D-rings and rivets are brass, stainless steel, or steel with a black or gun-metal finish. Black and gun-metal snap hooks are zinc die cast with the colour applied as a finish, and on the customisable ranges the buckle in those finishes is plated over steel. They look excellent, and the colour cannot be polished back once it wears.
On the customisable collars you pick the hardware yourself, so there is no single answer across a range. Whatever you choose, the fittings are load-tested by their manufacturers, and hardware is covered by the twelve-month guarantee.
Should the collar match the lead?
It does not have to, and matching sets are more of a photograph than a requirement. What is worth matching is hardware finish, because a brass D-ring against a black clip is the one combination that looks like an accident rather than a decision. Every personalised collar lets you set the finish, so if you already own a lead, order to that.
Made to order, from Oxford
Nothing is made before it is bought. Every collar is cut, woven or stitched to your measurements at 70 Wolsey Road in Oxford and goes out in two to six working days. There are 209 reviews on the site at an average of 4.99, and about a third of customers come back, which for a product designed to last is the number I care about. If the fit is wrong when it arrives, tell me and I will sort it.
Frequently asked questions
What is the best dog collar for everyday use?
For most dogs, a paracord collar on a BioThane adjustable strap is the best balance of comfort, weight and adjustability. For dogs that swim or live in mud, a full BioThane collar is more practical because it wipes clean and holds no smell. For a classic look, leather or a rope collar are both good. The best collar is the one that fits correctly and matches how the dog actually lives.
How do I know what size dog collar to buy?
Measure the neck with a soft tape, snug against the neck rather than over a thick coat, then add 2cm to 3cm for the ordering size so two fingers fit between collar and neck. For sighthounds also measure the widest point between skull and shoulders, because that measurement, not the neck, decides whether the collar can slip over the head.
What width dog collar should I choose?
Wider collars spread load across more of the neck, which is more comfortable under tension, but too wide fouls the jaw and shoulders. As a guide, a classic collar at 34mm of wool over a 19mm strap suits medium to large dogs, a wool sighthound collar goes to 43mm because width is a security requirement there, and small breeds are better at 16mm with light hardware.
Should I remove my dog's collar at home?
Where practical, yes. It removes the small but real risk of the collar catching on something, gives the neck a rest from contact, and forces you to re-check the fit every time you put it back on. That habit is how most people notice a gradual change in neck size before it becomes uncomfortable.
Why do sighthounds need a different collar?
A whippet, lurcher or greyhound has a head narrower than its neck, so a standard collar sized to the neck can pull straight over the skull when the dog backs up. A wide-profile sighthound collar sits between head and shoulder, is typically around 40mm wide, and is sized from the widest point of the neck rather than the narrowest.
What is the difference between a collar and a harness?
A collar sits round the neck and takes the lead at a D-ring. A harness sits round the chest and shoulders and spreads lead pressure across the body. For a dog that pulls hard or has any neck or tracheal sensitivity, a harness is usually the better daily walking tool. A collar still earns its place for tag carrying and for close, controlled work.
Every collar is made to your dog's measurements in Oxford. Send the numbers and I will build to them.
Paracord and BioThane, most popular →Greenwich Yarn rope collar →Sighthound collars →All dog collars →Measuring guide →
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