Many products vary in size between Brand Labels & manufacturers, who use their own size charts, which may lead to confusion as there is no universal sizing in the dog world.
We highly recommend checking your dogs measurements with each style and brand, as sizes can vary from product to product.
This is vitally important to save buying wrong sized items for your fur babies.
Neck Size
With a tape measure, gently encircle your dogs neck where the collar would sit.
Chest Size
Use the tape measure to gently encircle your dogs chest at it’s widest point, normally just behind the front legs.
Length
Measure the distance from your dogs neck where the collar sits to where the tail starts.

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Collars
- Using a seamstress tape or a piece of string, proceed to take a measurement of your dog’s neck
- Remember to allow 2 finger spaces, between the tape or string and the dog’s neck for movement to ensure a comfortable fit
- Measure the string with a ruler on a flat surface or note the measurement via the seamstress tape.
Harnesses
- Using a seamstress tape or a piece of string, take a measurement of your dog’s girth (just behind the front legs) and their Neck.
- For neck and girth, please allow sufficient room to slip two fingers between the measure tap and the dog’s neck and girth. A snug fit is what you are aiming for and not a tight one or one that chokes.
- Measure the string with a ruler on a flat surface or note the measurement via the seamstress tape.
Apparel
- Neck Size - With a tape measure, gently encircle your dogs neck where the collar would sit.
- Chest Size - Use the tape measure to gently encircle your dogs chest at it’s widest point, just behind the elbows.
- Length - Measure the distance from your dogs neck where the collar sits to where the tail starts.
Dog Goggles
Dogs come in various head shapes and sizes, it's important to measure your doggy first, to ensure the right fit.
1. Use a soft tape measure and measure above your fur baby's eyes, from temple to temple to avoid any discomfort.
2. Compare your dog's measurement to the width/size of the Goggles to ensure the best fit!
*Tip: If you only have a ruler, use a piece of string or ribbon, run it from temple to temple, then straighten it out against a ruler to get the measurement.
Dog Hats
Socks & Shoes
Measure your dog's front paw to ensure a comfortable fit.
- Place the paw on a piece of paper and press down on the top, mimicking how the paw spreads when the dog's walking.
- Mark the left and the right side on the paper and measure the distance between the marks. Compare this to the feet width in the product description.
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Every dog is different in size and shape, so please make sure that you measure and double check the sizing of your fur-baby before making a size selection.
Please also note, Big & Little Dogs may be different to other brands that are on the market. Ensure that you double check the sizing of each harness.
We would recommend not assuming that you will be the same size as another brand.
Also note that each Harness Type does have a different sizing, so please ensure to check the size chart prior to purchasing, as your pup may be in a different size in each type of harness.
If you're still not sure which would be the best fit, send us an email to sales@doggytopia.com.au with the following details and we will suggest the best fit for them:
1. Measure around the widest part of the base of the neck (the area where the collar would naturally sit)
2. Measure around the widest part of your dog's ribcage, just behind their front legs
3. Which products you would like sizing suggestions for
Here are a couple of tips for sizing:
- For neck and chest, please allow sufficient room to slip two fingers between the measuring tape and the dog’s neck or chest. A snug fit is what you are aiming for - just make sure it is not too tight or chokes your pet.
- Order the next size up if your dog falls between measurements.

Big & Little Dogs
Reversible Harness Sizing
Size |
Neck (cm) (Maximum Size) |
Chest (cm) |
XXS | 21cm | 29cm - 37cm |
Extra Small | 28cm | 36cm - 40cm |
Small | 30cm | 41cm - 53cm |
Medium | 35cm | 47cm - 60cm |
Large | 41cm | 52cm - 72cm |
Extra Large | 45cm | 58cm - 81cm |
* Neck is maximum size fit.
If your pup is larger than the maximum size, we suggest going up a size (neck size will be looser if your pup is not the exact maximum size)
Big & Little Dogs
Hoody Harness Sizing
Size |
Neck (cm) (Maximum Size) |
Chest (cm) |
Extra Small | 33cm | 33cm - 39cm |
Small | 37cm | 35cm - 45cm |
Medium | 40cm | 43cm - 61cm |
Large | 44cm | 50cm - 72cm |
Extra Large | 49cm | 56cm - 82cm |
* Neck is maximum size fit.
If your pup is larger than the maximum size, we suggest going up a size (neck size will be looser if your pup is not the exact maximum size)
Big & Little Dogs
Adjustable Harness Sizing
Size
|
Neck (cm)
|
Chest (cm)
|
Extra Small
|
26cm – 32cm
|
35cm – 50cm
|
Small | 33cm – 39cm | 42cm – 59cm |
Medium | 35cm – 44cm | 43cm – 59cm |
Large | 40cm – 47cm | 53cm – 80cm |
Extra Large | 44cm – 58cm | 57cm – 85cm |
Big & Little Dogs
Classic Print Harness Sizing
Size |
Neck (cm) (Maximum Size) |
Chest (cm) |
Extra Small | 26cm | 34cm - 45cm |
Small | 36cm | 35cm - 53cm |
Medium | 38cm | 48cm - 73cm |
Large | 43cm | 55cm - 81cm |
Extra Large | 49cm | 62cm -94cm |
Extra Extra Large | 54cm | 71cm - 97cm (note: chest strap is 3.8cm wide) |
* Neck is maximum size fit.
If your pup is larger than the maximum size, we suggest going up a size (neck size will be looser if your pup is not the exact maximum size)
Please note: if you already own one of the following Classic Print Harnesses (Camo, Love is Love, Perfect Petals, Dino-Mite, Palms for Dayze, Pine For You or Wild Love), sizing has changed and you will need to re-check which size you should purchase.
If you do have any issues, please email sales@doggytopia.com.au with your neck and chest measurement or the size and design you already own and we can help you out!)
Big & Little Dogs
Classic Plain Harness Sizing
Size |
Neck (cm) (Maximum Size) |
Chest (cm) |
Extra Small | 26cm | 34cm - 45cm |
Small | 36cm | 35cm - 53cm |
Medium | 38cm | 48cm - 73cm |
Large | 43cm | 55cm - 81cm |
* Neck is maximum size fit.
If your pup is larger than the maximum size, we suggest going up a size (neck size will be looser if your pup is not the exact maximum size)
Big & Little Dogs
Strap Harness Sizing
Size | Neck (cm) | Chest (cm) | Strap Size (mm) |
Small | 30.5cm - 46cm | 38cm - 54cm | 15mm width |
Medium | 36cm – 60cm | 48cm – 70cm | 20mm width |
Large | 50cm – 78cm | 64cm – 100cm | 25mm width |
Big & Little Dogs
All Rounder Harness Sizing
Size |
Neck |
Chest |
XS |
25 - 31cm |
25 - 50cm |
S |
30 - 45cm |
35 - 60cm |
M |
35 - 50cm |
40 - 71cm |
L |
40 - 60cm |
55 - 83cm |
XL |
55 - 84cm |
71 - 99cm |
Big & Little Dogs
Collar & Bow Tie Sizing
Size
|
Neck (cm)
|
Strap Size (mm) |
Extra Small | 22cm - 30cm | 15mm width |
Small
|
29cm – 39cm | 15mm width |
Medium
|
33cm – 51cm | 20mm width |
Large
|
41cm – 66cm | 25mm width |
Big & Little Dogs
Leash Sizing
Size
|
Width (mm) | Length (cm) | Weight (g) |
1.5cm | 15mm | 152cm | 80g |
2.5cm | 25mm | 152cm | 145g |
Big & Little Dogs
Bandana Sizing
Size
|
Neck (cm)
|
Small/Medium | up to 45cm |
Medium/Large
|
up to 65cm |
Big & Little Dogs
Hoody Jumper Sizing
If in between sizes, please size up
Size |
Neck (cm) (Maximum Size) |
Chest (cm) | Length (cm) |
Extra Small | 30cm | 35cm - 42cm | 22cm |
Small | 32cm | 40cm - 48cm | 25cm |
Medium | 40cm | 46cm - 52cm | 29cm |
Large | 42cm | 50cm - 56cm | 34cm |
Extra Large
|
46cm
|
54cm - 62cm | 38cm |
Extra Extra Large | 50cm | 62cm - 70cm | 45cm |
* Neck is maximum size fit.
If your pup is larger than the maximum size, we suggest going up a size (neck size will be looser if your pup is not the exact maximum size)
Big & Little Dogs
Pyjama Sizing
Size |
Chest |
Neck |
Back Length |
Underside Length |
XS |
38cm |
26cm |
23cm |
16cm |
S |
48cm |
34cm |
34cm |
21cm |
M |
60cm |
39cm |
43cm |
25cm |
L |
72cm |
44cm |
50cm |
33cm |
XL |
84cm |
49cm |
55cm |
35cm |
* Due to slight stretch in material, we would suggest ensuring the closest fit for Chest first, then neck followed by back length.
Big & Little Dogs
Bath Robe Sizing
Size |
Back Length |
Underside Length |
XS |
23cm |
16cm |
S |
34cm |
21cm |
M |
43cm |
25cm |
L |
50cm |
33cm |
XL |
55cm |
35cm |
* The robe features a velcro closure and neck size is irrelevant as it can be left open or closed depending on personal preference
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