How to Choose the Right Size Dog Bed for Every Breed

By Harry Barker | Luxury Dog Accessories and Products | Published: 2026-10-16

Category: Buying Guides

Measure your dog's length and width, then match those numbers to a bed that gives at least 6 inches of extra room. Use our decision rules to pick the right size for any breed.

Quick answer

Measure your dog from the tip of the nose to the base of the tail while they are lying down, then add 6 to 12 inches. That total length is the minimum bed size you need. For a dog that curls up, add 4 to 6 inches instead. Always check the bed's inner dimensions, not the outer frame.

Measure your dog the right way

Use a soft tape measure or a piece of string. Have your dog lie down in a natural, relaxed position. Measure from the tip of the nose to the base of the tail. Then measure the widest part of the body, usually across the shoulders or hips. Write both numbers down. If your dog stretches out when sleeping, use the longer measurement. If they curl into a ball, you can use the shorter measurement plus 4 to 6 inches.

Do not measure while your dog is standing. Standing height and length do not reflect how much space they need when sleeping. Also, measure your dog's current favorite sleeping spot. If they always sleep on the sofa or a specific blanket, measure that area and compare it to your dog's measurements.

Use a simple dog bed size chart

Once you have your dog's measurements, add the extra inches. Then match that total to common bed sizes. Small dogs (under 20 lbs) usually need a bed at least 24 inches long. Medium dogs (20–50 lbs) need 30 to 36 inches. Large dogs (50–90 lbs) need 40 to 48 inches. Giant breeds (over 90 lbs) need 50 inches or more. These are inner sleeping area dimensions, not the outer footprint. Always check the product details for the actual inner size.

If your dog is between sizes, size up. A bed that is slightly too large is safer than one that is too small. A too-small bed can cause your dog to sleep in awkward positions, which may lead to stiffness or poor rest. A too-large bed is fine for most dogs, though very small puppies may feel exposed in a huge bed. In that case, choose the smaller size and upgrade as they grow.

Consider your dog's sleep style and breed

Breed matters less than body length and sleep position. A long-backed breed like a Dachshund needs a bed that supports the full spine, even if they are lightweight. A bulky breed like a Bulldog needs a wider bed to accommodate a broad chest. For deep-chested breeds like Greyhounds, choose a bed with a lower profile so they can lie flat without their chest pressing against high bolsters.

If your dog stretches out flat, a rectangular bed with low or no bolsters works best. If they curl up or like to rest their head on an edge, a bed with raised sides gives a sense of security. For older dogs with arthritis, an orthopedic bed with memory foam provides joint support. The size still follows the same rule: measure, add extra inches, and check inner dimensions.

Bed covers and inserts: sizing gotchas

If you buy a bed cover separately from the insert, you must match the cover size to the insert size. A cover that is too small will not zip closed, and one that is too large will bunch up. Always check the cover's stated dimensions and the insert's dimensions. The cover's outer dimensions may be slightly larger than the insert to allow for the gusset and seams. For example, a cover with a 5-inch gusset is designed for an insert of the same length and width, but the cover will measure larger when laid flat.

When replacing a cover, measure your existing insert. Do not assume that a "large" cover from one brand fits a "large" insert from another. Brands size differently. Use the insert's measurements as your guide. If you are buying a cover without an insert, confirm the insert size it is made for. Some covers are sold without inserts, so you will need to purchase the insert separately.

Decision rules for sizing a dog bed

If your dog stretches out to sleep: Measure nose to tail while lying flat, then add 8 to 12 inches. Choose a rectangular bed with low or no bolsters so they can use the full length. A bed that is too short forces them to sleep curled up, which can cause stiffness.
If your dog curls into a ball: Measure the curled-up length, then add 4 to 6 inches. A bed with raised sides or a bolster can give them something to lean against. You can size down slightly compared to a stretcher, but never go below their curled length plus 4 inches.
If your dog is a large or giant breed: Look for inner dimensions of at least 40 inches for large breeds and 50 inches for giant breeds. Check the weight limit if listed, and choose a bed with sturdy construction and a removable, washable cover. Large breeds often need orthopedic foam for joint support. Confirm the foam thickness and density if that matters to you.
If you are buying a cover separately: Measure your existing insert's length, width, and height. Match those to the cover's stated insert dimensions. Pay attention to the gusset height: a 5-inch gusset fits a thicker insert than a 3-inch gusset. A cover that is too small will not zip; one that is too large will sag and bunch.
If your dog is a puppy: Buy for their expected adult size, or buy an inexpensive bed now and upgrade later. Puppies grow quickly, so a bed that fits today may be too small in three months. If you choose a bed for adult size, make sure the puppy can get in and out easily. Add a blanket for extra security if the bed feels too big.

Product facts to know

Classic Stripe Rectangle Dog Bed Cover: The Classic Stripe Rectangle Dog Bed Cover is made without pesticides, uses earth-friendly dyes, and is hypo-allergenic, naturally mildew resistant, antibacterial, and anti-fungal. It has a 5-inch gusset and YKK zippers for easy removal. It is machine washable, pre-washed, and pre-shrunk. Bed inserts are not included. This cover is a practical choice if you already have an insert that fits, or if you want a washable, low-allergen option. The 5-inch gusset means it fits a thicker insert, so check your insert's height. Because the insert is not included, you must confirm the cover's inner dimensions match your insert before buying.

Large Bone Dog Rope Toy: The Large Bone Dog Rope Toy is made from recycled cotton yarns and azo-free dyes. It comes in two sizes, small and large, and two fall hues, burgundy and teal. The rope toys are expected to unravel and help floss the dog's teeth. It is ideal for teething puppies when wet and frozen. This toy is not a bed, but it is relevant for sizing because it comes in two sizes. If you are buying for a large breed, choose the large size to match their chewing strength. For small dogs or puppies, the small size is safer. The fact that it unravels is normal and part of how it flosses teeth, so supervise use.
Cross Stitch Rectangle Dog Bed: The Cross Stitch Rectangle Dog Bed is an assembled bed featuring a custom print with a variety of dog breeds. It is a rectangle bed with plump filling. The cover is not sold separately in this listing; it is a complete bed. This is a ready-to-use option if you want a bed with a distinctive look and do not want to buy a cover and insert separately. Because it is assembled, you only need to match the bed's overall size to your dog's measurements. Check the inner dimensions before ordering.