Soft Dog Bed Sizes Explained: Finding the Right Fit for Small Breeds

Measure your small dog stretched on its side from nose to tail base, then pick a bed at least 4–6 inches longer, judged by the interior sleeping area rather than the outside dimensions.

A cocker spaniel and a pug both count as “small” at Orvis, yet the beds they fit range from 20 × 30 inches to 35½ × 25½ inches across manufacturers. That gap is why breed labels and weight charts mislead, and why a tape measure settles the question in under two minutes. The method below covers exactly where to measure, how the numbers translate to a real bed, and which construction details quietly steal sleeping space.

How Do You Measure A Small Dog For A Bed?

Measure your dog lying down in a full stretch, from the tip of the nose to the base of the tail — the point where the tail meets the body, not the tail tip. Add 4–6 inches to that length for a small dog; The Foggy Dog recommends this allowance for cats and small dogs and an 8–12 inch allowance for medium and large ones.

Two details decide whether the number is useful. First, the dog must be stretched out, not standing, curled, or mid-nap in a ball — a curled measurement can understate the true length by several inches. Second, the result has to be checked against the bed’s interior sleeping area, not the advertised exterior size. Bolsters, raised rims, and thick walls all reduce usable floor space, so an 18 × 27 inch bolstered bed with a 13 × 22 inch interior cushion fits more like a 13 × 22 inch bed.

Veterinary guidance cited by NBC Select adds a simple pass/fail test: when the dog is fully stretched, its entire body and toes should stay on the bed. If a paw hangs over the edge, the bed is too small regardless of what the label says.

What Do “Small” Dimensions Actually Look Like Across Brands?

There is no shared small-size standard. Manufacturers set their own dimensions and weight limits, so the same word describes very different beds. The table below shows current specs from two brands, and the spread makes the case for measuring rather than trusting a label.

The Foggy Dog’s bolstered small has a 13 × 22 × 2 inch interior cushion — the number that matters against your dog’s stretched length. Orvis’s own small-category examples include Cocker Spaniels, Beagles, Dachshunds, French Bulldogs, Boston Terriers, and Pugs, a list that spans short-legged and long-backed body types with very different sleeping footprints. Orvis’s dog product size information lays out those model specs in full.

When your measurement falls between two sizes, take the larger one. A little extra room costs nothing; a cramped bed means limbs hanging over the edge and a dog that abandons it.

Which Bed Shape Fits Your Dog’s Sleeping Style?

Match the shape to how the dog actually sleeps, then confirm the interior dimensions support a full stretch. Flat mats and rectangular beds give the most usable surface for dogs that sprawl or shift position through the night, and their listed length and width come closest to the real sleeping area.

Round and donut beds suit dedicated curlers, but the diameter has to be measured against the dog’s stretched length if it ever sleeps extended. Bolstered and enclosed beds offer head support and a snug feel, and they cut interior space the most — a bed can look generous from across the room and still be tight inside. Entry height is the other limiter: a dog must be able to step over the front edge without a struggle. NBC Select notes that small dogs can use larger-dog beds when they enter and exit comfortably, so access matters as much as floor area.

If you want a shortlist already filtered by size and construction, these top-rated small soft dog beds are worth a look before you commit. Dogs with short legs, mobility limits, or spinal-risk builds do best with a low-entry design, and an “orthopedic” label means little unless the interior cushion is genuinely thick and supportive.

What Are The Most Common Sizing Mistakes?

Most too-small beds trace back to a handful of avoidable errors. Skipping the tape measure and buying on breed or weight alone tops the list, since a 25-pound beagle and a 22-pound French Bulldog occupy different footprints.

• Measuring to the tail tip instead of the tail base, which inflates the number by several inches.
• Measuring a standing or curled dog rather than one stretched out on its side.
• Comparing the dog’s length with exterior dimensions instead of the interior cushion.
• Picking the cozier-looking small bed while toes and elbows hang over the edge.
• Ignoring how high the front rim sits for a short-legged dog.
• Assuming one brand’s small equals another’s — the cited beds run from 20 × 30 inches up to 35½ × 25½ inches.