For a strong puller, go one width up from the standard width for your dog's size. A wider collar spreads each pull across more of the neck, so the pressure lands on a band instead of a line.
That's the short answer. Width does help, but it's only half the job. The fit has to be right, and some dogs pull hard enough that the leash belongs on a harness instead. Here's how to work out which camp your dog is in.
What width is standard for each collar size?
Start with the chart. These are the widths we recommend for each size on our size guide:
- Small (8 to 11 inches): 1/2 inch
- Medium (11 to 14 inches): 5/8 inch
- Large (14 to 18 inches): 1 inch
- XL (18 to 22 inches): 1 inch
- XXL (22 to 28 inches): 1 1/2 inches
Those widths suit most dogs of that size on a normal walk. A strong puller isn't a normal walk, so for them the chart is where you start, not where you stop.
Why does a wider collar help a dog that pulls?
Think about carrying a heavy shopping bag. Thin plastic handles dig into your fingers. A wide strap over your shoulder carries the same weight and barely bothers you.
A collar works the same way. When your dog leans into the leash, all that force goes through the strip of collar at the front of the neck. The wider that strip, the less pressure on any one spot. The weight of the pull hasn't changed, but it's spread out.
A wider strap also tends to sit flatter and twist less when your dog lunges sideways. That keeps the D-ring where it should be and the collar lying flat against the coat.
How much wider should a strong puller's collar be?
One step up the chart is usually right:
- A Medium dog that pulls: 1 inch instead of 5/8.
- A Large or XL dog that pulls: 1 1/2 inches instead of 1.
- A Small dog that pulls: 5/8 inch instead of 1/2.
Don't jump two steps. A collar that's too wide for the neck can't sit properly. On a short neck it pushes up into the jaw when your dog lies down or looks down, and it can rub behind the ears. The goal is the widest strap that still sits comfortably, not the widest strap we can make.
A quick check: with the collar on, your dog should be able to lower their head to sniff and eat without the top edge digging under the chin. If it does, the collar is too wide for that dog.
Our standard collars come in the width on the chart. If you want one width up, ask for it through the custom order form. Send your dog's neck measurement and the width you want, and we'll confirm the details with you before you pay anything.
Does a wider collar stop a dog pulling?
No. Width makes pulling more comfortable for your dog's neck. It doesn't teach your dog to stop.
A wider collar is a good fit for a dog who pulls now and then: the squirrel lunge, the excited first five minutes, the dash to say hello. It's not the answer for a dog who leans into the leash for the whole walk.
For the all-walk puller, our size guide gives the same advice we'd give a friend: clip the leash to a harness and keep the collar on for ID. A harness takes the pull through the chest and shoulders instead of the neck. Every one of our collars has a harness option under Style, sized by chest girth, and the harness chart is on the size guide too. Our collar vs harness guide covers that choice in more detail.
If your dog coughs, gags or wheezes when they pull, move the leash to a harness and talk to your vet. That's not something a wider collar should be asked to fix.
What else matters for a strong puller's collar?
Width is one part. These matter just as much:
- The fit. Two fingers should slide flat under the collar, no more. A loose collar on a puller slides up and down the neck and can come over the head on a hard backward pull. A tight one presses even when your dog isn't pulling.
- The hardware. Every pull goes through the buckle and the D-ring. Ours are solid cast, weld-free metal, so there's no welded seam to open up under a lunge. Check the prongs and ring for wear every few weeks anyway.
- The buckle type. Metal is our default, and it's the one we'd pick for a puller.
- The leash. A puller is easier to hold on a sensible length. Four to six feet is plenty for most walks, and a shorter lead gives your dog less run-up before they hit the end.
- The wear spots. When you check the hardware, look at the strap near the D-ring and the buckle holes too. That's where a puller's collar wears first.
Ready to give your puller a collar that spreads the load? Browse our handmade dog collars, then send the width you want through the custom order form.
FAQ
Is a 1 1/2 inch collar too wide for a Medium dog?
Usually, yes. Two steps up the chart is a lot of strap for an 11 to 14 inch neck. Try 1 inch, and check that your dog can drop their head without the collar digging in.
Can I use a wider collar instead of a harness for a puller?
For a dog who pulls now and then, yes. For a dog who pulls the whole walk, or coughs when they pull, clip the leash to a harness and keep the collar for ID.
Will a wider collar be heavier?
A little. On a medium or large dog you won't notice it. On a very small dog, stick to one step up at most so the collar stays light.
Want to see the prints? Start with our handmade dog collars.