Dog Sizes and Measurement Guideline

How do I measure my dog?

Measuring your dog is very important to do before purchasing any dog apparel from the store. Below is a guide on how to measure the back 'length', 'chest', and 'neck' sizes of your dog. If you have any questions or problems on the measuring process, please feel free to contact us anytime or email us at 

What do you need?

To measure your dog, use a cloth measuring tape or if you don't have one you can use a piece of string and measure the string with a ruler after. Please note, some products may not require all three measurements but 1-2 of the measurements listed below. It's best practice to follow the table guidelines in the product description. Please pay particular attention to back length measurements for items with 'onesie' designs (item must fit front and back legs). 


Measure from the base of the neck (where the collar would be) to the base of the tail along your dog's back bone. 


Measure directly behind the two front legs around the thickest part of your dog's chest. 


Measure around your dog's neck along the position of your dog's collar.

Dog Size Measurement Diagram - Woof Suits


  • The chest is one of the most important measurements. Getting the correct measurement will ensure your dog can move freely without restriction or tripping. 
  • If your dog cannot move or their movements look restricted it is best to go up a size.
  • If your dog is a little 'chubby', naturally has a broader chest, or has a thick coat and is at the maximum of one size or is between two sizes it is generally best to choose the larger size. All dog clothing should fit comfortably without any restrictions or tightness.  
  • When your dog is wearing clothes it is important to supervise them at all times especially if it is their first time wearing any dog apparel and to ensure they are happy and comfortable. 


How do you know if your dog is a small, medium, or large dog breed?

You can find this information in every product description in the bullet points showing popular dog breeds that are a ideal fit for that item. Dog sweaters and costumes are designed predominantly for small dog breeds, while our dog coats tend to fit small to large dogs. 

We have also put together a more comprehensive guide below on what we consider to be small, medium, and large dog breeds. All dog breeds listed are assumed to be fully grown and not puppy size. If you are choosing dog apparel for a puppy or a dog with a broad chest, select a size up based on measurements to allow for room and growth.

We have included popular dog breeds for small medium, and large dog breeds. If the dog breed you are looking for is not present, try comparing your dog's breed to the most similar breed in the information provided. See further details below:

Dog Breed Size Classes

Small Breeds: Beagle, Boston Terrier, French Bulldog, Bull Terrier, Chihuahua, Cairn Terrier, Chinese Crested, Cocker Spaniel, Dachshund, Fox Terrier, Italian Greyhound, Jack Russell, Lhasa Apso, Maltese, Papillon, Pekingese, Pomeranian, Small Poodle, Pug, Schnauzer Mini, Shetland Sheepdog, Shih Tzu, Yorkshire Terrier.

Medium Breeds: Afgan Hound, Airedale Terrier, Akita, Alaskan Malamute, Australian Shepherd, Besset Hound, Border Collie, Boxer, Britanny, English Bulldog, Chow Chow, Collie, Dalmatian, Doberman, Golden Retriever, Greyhound, Labrador, Norwegian Elkhound, Pitbull Terrier, Siberian Husky, Springer Spaniel.

Large Breeds: English Mastiff, St. Bernard, Newfoundland, Great Pyrenees, Great Dane, German Shepherd, Rottweiler, Bernese Mountain Dog.

If an item fits small dogs, the measurement table will try to accommodate to a range of "small dogs" in the product description. For example, a french bulldog may seem to be a size S but actually that may be a better fit for a teacup chihuahua that will be better off with a size L or XL. This applies to items that fit all medium and large dogs.

Furthermore, sizes are not universal or uniform for all items listed on the website. For example, a size M for a particular dog coat will not resemble the same measurements as a size M for a particular dog sweater. Almost every item has it's own unique measurements and size guidelines that you can refer to on the product page. 

By measuring your dog correctly according to our guidelines you also avoid any customer disappointment and delays in the event of an exchange or return