How to Choose the Right Pet Bed Size: Complete Sizing Guide 2026
How to Choose the Right Pet Bed Size
Complete Sizing Guide for Dogs & Cats — Get It Right the First Time 🐕🐈✨
Choosing the wrong size pet bed is the #1 mistake pet owners make — and it's why so many expensive beds end up ignored on the floor while your pet sleeps on the couch. Size matters more than brand, material, or price.
This complete sizing guide walks you through exactly how to measure your dog or cat, which bed types suit which sleeping styles, and our top picks for every size category.
🛏️ Key Rule: Always add 6–12 inches to your pet's body length when choosing a bed. A bed that's the same size as your pet gives them no room to stretch, shift, or feel truly comfortable.
📏 How to Measure Your Pet for a Bed
🐕 Measuring Your Dog
- Have your dog lie down in their natural sleeping position
- Measure nose to tail base (length)
- Measure widest point of body (width)
- Add 6–12 inches to both measurements
- Round up to the next standard size
🐈 Measuring Your Cat
- Measure your cat stretched out fully (nose to tail)
- Most cats need 18–20 inch diameter beds
- Large breeds (Maine Coon, Ragdoll) need 24+ inches
- For cave beds, a snug fit is actually preferred
- When in doubt, size up
📊 Dog Bed Size Chart
| Size | Dog Weight | Dog Length | Bed Size |
|---|---|---|---|
| XS | Under 10 lbs | Under 12" | 18" x 18" |
| S | 10–25 lbs | 12–18" | 24" x 18" |
| M | 25–50 lbs | 18–24" | 30" x 24" |
| L | 50–90 lbs | 24–30" | 36" x 28" |
| XL | 90+ lbs | 30"+ | 42" x 34"+ |
🛌 Sleeping Style Matters Too
Curlers
Pets who curl into a ball. Best fit: donut or bolster beds. Can go one size smaller than the chart suggests.
Sprawlers
Pets who stretch out fully. Best fit: flat mats or large rectangular beds. Size up generously.
Burrowers
Pets who hide under blankets. Best fit: cave or hooded beds. A snug fit provides the security they crave.
Leaners
Pets who rest their head on raised edges. Best fit: bolster or donut beds with firm, raised sides.
Veterinarian Recommendation
"For senior pets or those with joint issues, I always recommend sizing up and choosing orthopedic memory foam. A bed that's too small forces pets into unnatural positions that worsen arthritis and hip dysplasia over time. Comfort and support should always come first."
🛍️ Top Bed Picks by Size
From the Calm & Rest and Beds & Cushions collections:
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⭐ What Pet Owners Are Saying
"I always bought beds that were 'big enough' but my dog never used them. Sized up properly and she uses it every single night now."
— Karen M. ✅ Verified Buyer
"The memory foam bed transformed my senior Lab's mobility. He gets up so much easier in the morning. Wish I'd done this years ago."
— Robert T. ✅ Verified Buyer
"Used the sizing guide and got the perfect donut bed for my cat. She was in it within an hour. First bed she's ever actually used!"
— Olivia S. ✅ Verified Buyer
❓ Frequently Asked Questions
How do I measure my dog for a bed?
Measure your dog from the tip of their nose to the base of their tail while lying down. Add 6–12 inches for the ideal bed length. For width, measure at the widest point and add 6 inches.
Should a dog bed be the same size as the dog?
No — the bed should be larger. A bed the same size as your dog gives them no room to stretch or shift positions. Add at least 6–12 inches to your dog's length for the ideal size.
What size bed does a cat need?
Most cats do well with an 18–20 inch diameter bed. Larger breeds like Maine Coons may need 24+ inches. Always measure your cat stretched out and add 6 inches.
Is it better to get a bigger pet bed?
Generally yes — when in doubt, size up. A slightly too-large bed is always better than one that's too small. The exception is cave beds, where a snug fit provides the security anxious pets prefer.
Find the Perfect Bed for Your Pet
Explore the complete FetchMart System — premium beds for every size, breed, and sleeping style.
Explore The FetchMart System →💛 Final Tip: If your pet ignores their new bed, try placing a worn t-shirt of yours inside it. Your scent is the most powerful comfort signal for any pet — and it works almost every time. 🛏️