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Dog Collars Harnesses Guide

Get the right dog collar and harness

When it comes to collars, all dogs need one! An important component in ensuring your pet stays safe and secure, you'll want to keep your dog's ID tags up to date and securely attached to their collar at all times. Harnesses are recommended for most dogs, but it can depend on your dog's personality and leash-walking style.

Choose a collar

Buckle/clip dog collars – These are standard collars that work for most dogs and are easy to take on and off.

Martingale collars – Specially designed for dogs who may slip out of normal collars (such as Greyhounds, whose neck widths are often equal to or wider than their heads). These can also be great for dogs who are uncomfortable with leash walking and may try to back out of their collar.

If you're wondering which is best for your pet, a Petco store partner can help you pick the right one. Remember, leashed dogs are welcome to shop with you at Petco.

Understand the benefits of a dog harness.

You're in charge. Harnesses usually give you better control while walking (especially if the clip is on the front). However, some harnesses can cause certain dogs to pull harder.

Training time. Most of the time, a dog training harness harness can make training a lot easier.

Breathe easily. Harnesses are great for dogs with respiratory issues, especially breed-related ones such as Pugs.

Quick tips

What size? Collars and harnesses range from extra small to extra large. You should be able to fit two fingers between the collar or harness and your dog's neck or body. Harnesses should be chosen based on your dog's weight, size and the way it fits.

Use only when needed. Harnesses aren't the most comfortable accessories when your dog wants to lounge. We recommend you only put on the harness when you are taking them out.

This size guide can help you estimate which size collar or harness should best fit your dog.

Size Neck Width Weight Common Breeds
XXS 6-8" <5 lbs.
Chihuahua, Teacup breeds
Teacup breeds
XS 8-12" 5-10 lbs.
Maltese, Yorkie
S 10-14" 10-25 lbs.
Pug, Cavalier King Charles Spaniel
Cavalier King
Charles Spaniel
M 14-20" 25-55 lbs.
Collie, Standard Poodle
Standard Poodle
L 16-26" 55-75 lbs.
Boxer, Lab
XL 24-30" 75+ lbs.
Bernese, Rottweiler

Measuring tip: Use a piece of string to measure your dog's neck if you want to get an idea of what size they should wear.

Collars and harnesses 101

Learn about collar and leash types and watch a clip on how to buy the right one for your pet.

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