Getting the size right is the most important step when buying a dog backpack. A backpack that’s too big can leave your pup unstable and unsafe, while one that’s too small can cause discomfort, overheating, or even restrict their breathing. Proper sizing ensures that your dog is supported, comfortable, and safe — whether you’re running errands, exploring the city, or heading out on a hike.
This guide walks you step by step through how to measure your dog and find the right Little Chonk backpack for their size.
Why Proper Measurement Matters
According to American Kennel Club (AKC), correct gear fit is essential for preventing injury and keeping dogs comfortable during activities. An incorrectly sized backpack can cause:
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Restricted breathing for brachycephalic (flat-faced) breeds.
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Pressure on joints and spine if weight isn’t supported evenly.
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Overheating if ventilation doesn’t align with your pup’s size.
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Stress and anxiety if the fit is unstable or too loose.
Step-by-Step: How to Measure Your Dog
To find the right backpack, you’ll need three key measurements:
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Weight – Place your dog on a scale or hold them while weighing yourself, then subtract your own weight.
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Length – Measure from the base of your dog’s neck to the base of their tail (straight line, not curve).
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Chest Girth – Wrap a soft tape measure around the widest part of your dog’s chest, just behind the front legs.
💡 Tip: Take measurements twice to be sure — dogs wriggle!
Matching Measurements to the Right Backpack
Once you’ve got your dog’s numbers, here’s how they map to Little Chonk backpacks:
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Maxine One Small – Perfect for breeds like Shih-Tzus, Dachshunds, Pugs, Miniature Poodles, Pomeranians, Maltese, Havanese, Mini Terriers, and puppies of all breeds.
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Maxine One Medium – Ideal for French Bulldogs, Cocker Spaniels, Mini Aussies, and similar breeds.
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Brodie One – Built for larger pups who still need a lift.
This sizing system ensures a secure, comfortable fit — without compromise.
As Wired Magazine reported, the Maxine One is “a thoughtfully designed backpack that actually fits dogs properly.”
Super Important Tips
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Always round up with puppies – If your puppy is close to the upper limit of a size, choose the next size up to allow room to grow.
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Don’t rely on weight alone – Length and chest girth are usually more important for proper fit.
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Check breed-specific guidance – Flat-faced breeds may need extra attention for airflow.
- Fit test before big adventures – Try the backpack at home for 10–15 minutes before going out.
Measure your pup today and find their perfect match in the Little Chonk backpack collection.
