A sofa bed labeled for cats and one labeled for dogs are built from the same basic idea — a cushioned seat with a few raised sides — but the two labels usually point to a different footprint and wall height, not a different idea of comfort. Dog sofa beds are sized against the dog's measured length and width, with a lower entry so a dog can step in and sprawl out flat. Cat sofa beds tend to run smaller and favor taller, more enclosed sides that a cat can tuck into. Neither shape is better on its own — they're built around two different default resting styles.

Is a "cat bed" size actually different from a "dog bed" size?

Yes, in how it's measured. Dog bed sizing works backward from the dog's body — you measure length and width and match that to a size chart — while cat bed sizing is less about a formula and more about giving the cat a snug space it can curl into.

Chewy's pet care guide walks through the dog-side version of this: measure your dog from the tip of the nose to the base of the tail for length, then across the widest part of the shoulders for width, ideally while the dog is calm or resting. If the measurements land between two sizes, the guide recommends picking the larger one, since a little extra room costs less comfort than too little. There isn't an equivalent weight-and-measurement chart for cat beds in the same way — cat sizing is driven more by how tightly the cat likes to curl, which is why cat sofa beds come in a narrower range of sizes to begin with.

Why do so many cat sofa beds have high, cave-like sides?

Because feline behavior guidelines treat a hiding, enclosed resting spot as a core need, not a nice-to-have. The raised sides on a cat sofa bed are doing a specific job: giving the cat something to back into and feel surrounded by.

The AAFP and ISFM Feline Environmental Needs Guidelines describe giving cats "individual hiding places" that provide "a sense of enclosure, isolation or seclusion," and note that a perch or elevated spot lets a cat "monitor its environment" while still feeling tucked away. A sofa-style cat bed with raised armrests and a cushioned well is a simple, furniture-friendly way to offer that — the cat gets walls on a few sides and a slightly elevated seat, without the room needing an actual cat cave or covered box.

Why do dog sofa beds focus more on flat, cushioned support?

Because most dogs want room to stretch out fully, and as dogs get older, a padded surface that doesn't pinch at the shoulders or hips matters more than high walls. A dog sofa bed is built to be gotten into easily and lounged across, not curled inside.

Vetstreet's guidance on helping a dog with stiff or aging joints specifically recommends "a padded dog bed" and "soft supportive bedding for his achy joints" as part of making the home more comfortable day to day. That's the same logic behind a furniture-style dog sofa bed: the raised sides are there mostly for a cozy backrest, while the bulk of the design — the cushioned seat, the elevated base that keeps a dog off a cold or hard floor — is doing the comfort work.

If I have both a cat and a dog, do they need separate beds?

For cats, yes if there's more than one cat in the house — and that preference tends to carry over to sharing space with a dog, too. Dogs are generally more flexible about sharing a resting spot, as long as it's big enough for both.

The feline guidelines are specific on the multi-cat point: a household should have "at least as many safe places, sized to hold a single cat, as there are cats," and those spots should be "physically separate from each other." That's written with multi-cat homes in mind, but it lines up with what most owners already notice — a cat usually wants its own spot, regardless of what else is in the house. A dog, by contrast, will often happily pile onto a shared bed if there's room.

Can a "dog" sofa bed work for a cat, or a "cat" one work for a small dog?

Often, yes — it comes down to fit, not biology. Plenty of sofa-style pet beds on the market are named for "Dog & Cat" use from the start, while only a handful carry a species-specific name.

A sofa bed named with a wraparound bolster or a bolster-and-hug shape is usually sized and sold as suitable for a small dog or a cat alike. The styles that do carry a specific species in the name tend to be the ones built around one end of the size range, either a smaller, higher-walled build for a cat or a lower-entry, broader build meant for a dog. The name is really shorthand for "built at this size and wall height," not a rule about which species is allowed on it.

FAQ

Can my cat use a sofa bed labeled for dogs?

If the bed is a size your cat can get comfortable in, yes — plenty of sofa beds are already labeled for both species. The main thing to check is whether the sides are high enough that your cat still feels enclosed, since that usually matters more to a cat than the label on the product.

Do I need a separate bed for every pet in the house?

For cats specifically, yes if you have more than one — feline guidelines recommend at least one resting spot per cat, kept apart from the others. Dogs are generally more flexible about sharing, though a bed sized for one dog won't comfortably fit two.

My pet's measurements fall between two sizes — which should I pick?

Size up. Dog bed sizing guidance specifically recommends choosing the larger size when a dog's measurements fall between two, since a little extra room costs less comfort than too little. The same logic holds for a cat that's on the larger side for its usual size.

Our Pick: The ZEZE Striped Sofa Cat Bed

ZEZE Striped Furniture Style Sofa Cat Bed brings the raised-armrest, enclosed-feel shape described above into a compact, furniture-style frame. The plush cushioned surface and raised sides give a cat somewhere to tuck in, and a built-in handle makes it easy to move between rooms or bring along when traveling. It comes in two sizes — a more compact Yellow and a wider, lower Orange — so you can match it to how snugly your cat likes to curl.

Available in the compact Yellow or the wider Orange colorway.

Our Pick: The ZEZE Plaid Vintage Sofa Dog Bed

ZEZE Plaid Vintage Furniture Style Sofa Dog Bed is the lower-entry, flat-cushion build described above, dressed in a classic plaid with vintage furniture-inspired styling. The elevated structure keeps a dog off cold or hard floors for better airflow, and the open sofa shape makes it easy for a dog to step up and stretch out rather than curl into a corner. It's sized for dogs and blends into most home decor styles, from a living room to a sunny spot by the window.

Only the best for your loving pet.

Sources:

• Ellis, S.L.H., Rodan, I., Carney, H.C., Heath, S., Rochlitz, I., Shearburn, L.D., Sundahl, E., & Westropp, J.L. (2013). AAFP and ISFM Feline Environmental Needs Guidelines. Journal of Feline Medicine and Surgery, 15(3), 219–230. catvets.com
• Gould, W.R. "How To Choose the Best Dog Bed Size for Your Pup." Chewy.com
• "10 Ways to Help an Arthritic Dog." Vetstreet (vet-reviewed). Vetstreet.com