How To Choose The Perfect Size For Your Dog’s Collar

choose a size for your dog's collar

Recently, my dog had some health scares (another long story for another day!). Luckily, Marnie did recover. When I finally took him out for a walk, he was absolutely over the moon! Anyway, if you don’t know much about cherry eye in dogs, you better read up more about it on EyeVet because that’s what happened to Marnie.

Pardon the digression, let’s get back to topic:  How to choose the perfect size for your dog’s collar? There’s so much more that goes into it than just trying to decide a good fit with the naked eye.


Dog breeds are sorted into different sizes, and you must take this into consideration when choosing the right collar for your dog. Some collars even have labels to indicate what kind of breeds they would be a great fit for, or you can just ask the pet store what size or breed of dogs the collar fits.

You must also keep in mind that your dog’s size is what matters most, not their breed’s size. They may or may not fit into the standard measurements for their breed, but it can give you a general idea of what can fit them.


If you really want to be sure, then you can measure your pet’s neck to determine what collar would fit them best. You can use a cloth measuring tape to do this, and it’s as simple as getting the circumference of their neck. To make sure that the collar won’t hurt your pet because it’s too tight, you must generally add 1 inch to the measurement for small breeds, 2 inches for a medium breed, and 3 inches for larger breeds. The final amount would be the size of the collar that you should look for.


If your dog has long fur that can affect the fit of a collar on their neck, then you should also take this into consideration. Measure the circumference of their neck before and after getting groomed, then choose a collar that could accommodate these two measurements.

Luckily, a lot of collars out there are adjustable, and you can pick one which could fit your dog before and after getting groomed. Don’t forget to add the inch allowance to keep them from getting hurt.


You may be wondering whether or not the width of the collar has anything to do with your options, and they do. Wider collars can provide more support and smaller pressure on your dog’s neck. However, they also tend to be heavier. In this case, you may want to save the wider collars for larger, stronger dogs. You can choose a collar that has just the right width for your dog, so that they can also provide support and ease the pressure on your dog’s neck depending on the size of your dog.

choose a size for your dog's collar


If your dog is not fully grown yet, then you must go for an adjustable collar that would accommodate their growing size. You wouldn’t want to buy a collar that fits them exactly only to have to buy another one when they outgrow it. The minimum adjustment on your dog’s collar should be their current measurement, so that as they grow you just keep on adjusting the collar to make them comfortable.


Once you get a collar for your dog, the job’s not done yet. You still have to regularly check whether or not the collar still fits on their neck and whether or not it requires adjustment because they’ve grown since the first time you put it on them. The general rule is that well-fitted collars are those you can put one finger under (for small breeds), two fingers under (for medium breeds), or three fingers under (for larger breeds). This would ensure that not only is your pet comfortable, but the collar also does not pose any hazards to them.

husky with collar


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