A 45 lb dog sits right in the medium-to-large range, which makes bed sizing surprisingly important. A bed that looks “large” on a product page can still feel cramped once thick bolsters reduce the usable sleeping area. For my picks, I focused on beds with enough room for a roughly 45 lb dog to curl up or stretch out, supportive foam, washable covers, stable bottoms, and practical materials for everyday use.
For 2026, I generally prefer an orthopedic foam bed over a lightly stuffed pillow bed for a dog in this weight range. Foam provides a more consistent sleeping surface and is less likely to flatten quickly under repeated use.
Quick Summary
This guide is for owners of dogs around 45 lb who want a comfortable everyday bed for sleeping, lounging, crate use, or added joint support.
For most dogs this size, I like beds roughly 35–41 inches long. Dogs that sleep curled up may be comfortable near the lower end of that range, while sprawlers usually benefit from more room.
My top overall recommendation is the BFPETHOME Orthopedic Washable Large Dog Bed. Its approximately 36 x 27-inch footprint is particularly well suited to this weight class, and buyer feedback specifically includes owners of dogs around 45 lb reporting plenty of room.
Top 6 Dog Beds for a 45 lb Dog
- BFPETHOME Orthopedic Washable Large Dog Bed — Best Overall
- EHEYCIGA Orthopedic Dog Bed Large Memory Foam with Sides — Best Premium Choice
- Bedsure L Plus Orthopedic Dog Bed 38in — Best for Dogs That Stretch Out
- Bedsure Orthopedic Dog Bed Large 35in Removable Washable Cover — Best Sofa-Style Bed
- Sunheir Washable Orthopedic Large Dog Bed Removable Cover — Best Value
- EHEYCIGA Orthopedic XL Dog Bed 41x27 for Crate — Best for Crates
Best Dog Bed for 45 lb Dog
BFPETHOME Orthopedic Washable Large Dog Bed
Short Description
This orthopedic sofa-style bed combines a roomy sleeping surface with raised sides. I think its proportions make particularly good sense for an average 45 lb dog that likes both stretching out and resting its head against a bolster.
Key Specifications
- Approximately 36 x 27 x 6.5 inches
- Designed for large dogs
- Supportive foam construction
- Polyester and velvet materials
- Removable, machine-washable cover
- Bolstered sides
- Intended primarily for indoor use
Pros
- Excellent dimensions for many 45 lb dogs
- Supportive sleeping surface
- Raised edges provide a headrest
- Washable cover simplifies cleaning
- Room for curled and partially stretched sleeping positions
Cons
- Bulky compared with simple crate mats
- Bolsters reduce some of the interior sleeping space
- Not intended as a chew-proof bed
My Experience
What stands out to me is the balance between footprint and usable comfort. I wouldn't need an oversized XL bed for most 45 lb dogs with this model. Its 36 x 27-inch dimensions provide meaningful room without taking over a room.
I also like the foam-based construction for a dog of this weight because it should maintain a more consistent sleeping surface than loosely filled beds.
What Other Buyers Say
Recurring feedback praises the bed's comfort, supportive feel, washable cover, and roomy dimensions. Notably, feedback from an owner of a roughly 45 lb dog described having plenty of space. Owners also mention that the bed arrives compressed and needs time to expand.
Best For
Most 40–50 lb dogs needing a supportive everyday bed with bolsters.
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EHEYCIGA Orthopedic Dog Bed Large Memory Foam with Sides
Short Description
The EHEYCIGA is a substantial orthopedic sofa bed with memory foam, egg-crate foam, and surrounding bolsters. It is one of my preferred designs for dogs that regularly rest their head against the side of their bed.
Key Specifications
- Approximately 36 x 27 x 6.5 inches
- Memory foam and egg-crate foam construction
- Raised bolster sides
- Waterproof protection around the sleeping area
- Removable washable cover
- Non-slip bottom
- Rectangular design
Pros
- Thick, supportive construction
- Excellent size range for a 45 lb dog
- Bolsters provide multiple resting positions
- Removable cover
- Non-slip base
- Strong volume of positive buyer feedback
Cons
- Takes more floor space than a flat mat
- Foam needs time to fully expand after unpacking
- Fabric is not designed for destructive chewers
My Experience
For a 45 lb dog, I particularly like the 36 x 27-inch format. It offers enough exterior space without jumping unnecessarily to an extra-large model.
The combination of a supportive base and bolsters also makes this more versatile than a flat mattress for dogs that constantly reposition themselves.
What Other Buyers Say
Buyers frequently praise the comfort, support, size, softness, and removable cover. Some owners note that compressed foam needs time to reach its proper shape, while occasional feedback mentions fabric wear with dogs that scratch or chew aggressively.
Best For
A 45 lb dog that prefers a deep, sofa-like bed with head and neck support.
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Bedsure L Plus Orthopedic Dog Bed 38in
Short Description
This larger Bedsure orthopedic option gives a 45 lb dog more room than typical 35- or 36-inch beds, making it especially appealing for dogs that sleep fully stretched out.
Key Specifications
- Approximately 38 x 28 inches
- Orthopedic egg-crate foam
- Four-sided bolster design
- Waterproof inner protection
- Removable washable cover
- Non-skid bottom
Pros
- Generous room for a 45 lb dog
- Supportive foam base
- Bolsters add head support
- Washable cover
- Waterproof inner layer
- Stable base
Cons
- Larger footprint
- Bolsters consume part of the nominal 38-inch dimensions
- More bed than necessary for dogs that always curl tightly
My Experience
I would choose this size over a smaller bed for a long-bodied 45 lb dog or one that routinely sleeps with all four legs extended. The extra length gives the dog freedom to reposition without immediately reaching the edge.
What Other Buyers Say
Owners commonly highlight comfort, orthopedic support, convenient cleaning, and roomy sizing. The soft bolsters are popular with dogs that use the edge as a pillow, although some buyers prefer firmer side support.
Best For
Long-bodied or sprawled-out sleepers around 45 lb.
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Bedsure Orthopedic Dog Bed Large 35in Removable Washable Cover
Short Description
This 35-inch Bedsure sofa bed is a more compact choice for a 45 lb dog that usually curls up rather than stretching completely flat.
Key Specifications
- Approximately 35 x 25 x 6.5 inches
- Orthopedic polyurethane foam
- Four-sided bolster design
- Waterproof inner protection
- Removable washable cover
- Non-skid bottom
Pros
- Space-efficient sofa design
- Supportive foam
- Comfortable bolstered perimeter
- Easy-to-remove cover
- Waterproof protection
- Non-slip bottom
Cons
- Interior sleeping area is smaller than the exterior dimensions
- Large or long 45 lb dogs may prefer the 38-inch option
- Not chew resistant
My Experience
I see the 35-inch version as a good fit when floor space matters. I'd favor it for compact 45 lb breeds or dogs that naturally curl against a bolster. For a tall, lanky dog at the same weight, I'd move up to the 38-inch option.
What Other Buyers Say
Buyer feedback frequently mentions softness, comfort, supportive foam, and convenient cleaning. Owners generally appreciate the removable cover, although reinstalling a snug cover can take a little effort.
Best For
Compact 45 lb dogs and curled sleepers.
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Sunheir Washable Orthopedic Large Dog Bed Removable Cover
Short Description
Sunheir offers a simpler orthopedic mattress without bulky bolsters. I like it for owners who want supportive foam, washable materials, and crate-friendly dimensions without paying for a sofa-style design.
Key Specifications
- 35 x 22 x 3 inches
- 3-inch egg-crate foam
- Plush Sherpa-style top
- Waterproof TPU layer
- Removable machine-washable cover
- Anti-slip bottom
- Rectangular design
Pros
- Good value
- Orthopedic egg-crate foam
- No bolsters taking away sleeping space
- Waterproof layer
- Washable cover
- Fits many 36-inch crate setups
Cons
- Only 3 inches thick
- Less substantial than bolster beds
- Some buyers report sizing or thickness feeling smaller than expected
- Unsuitable for persistent chewers
My Experience
The big advantage here is efficiency. Almost the entire 35 x 22-inch footprint is usable sleeping space. For a 45 lb dog that doesn't care about bolsters, that can make this relatively compact bed surprisingly practical.
What Other Buyers Say
Owners regularly praise its soft top, affordability, washable cover, and easy-to-place rectangular shape. Some complaints center on the foam feeling thinner than expected and durability with dogs that scratch or chew.
Best For
Budget-conscious owners, crates, and dogs that prefer flat mattresses.
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EHEYCIGA Orthopedic XL Dog Bed 41x27 for Crate
Short Description
This roomy orthopedic crate mattress is a strong choice when a 45 lb dog needs extra stretching space or when you're filling a larger crate.
Key Specifications
- Approximately 41 x 27 x 3.5 inches
- 3.5-inch supportive egg-crate foam
- Soft sleeping surface
- Removable machine-washable cover
- Non-slip bottom
- Designed for crate or standalone use
Pros
- Plenty of room for a 45 lb dog
- Useful rectangular shape
- Supportive foam
- Washable cover
- Works inside or outside a crate
- Excellent for stretched sleeping positions
Cons
- Oversized for compact 45 lb dogs
- Foam itself isn't machine washable
- Takes significant floor or crate space
- Fabric can be damaged by heavy chewing or scratching
My Experience
I wouldn't automatically choose an XL bed just because a dog weighs 45 lb, but this model makes sense for owners who prioritize space. Its flatter design also means the dog can use nearly the entire surface rather than losing inches to bolsters.
What Other Buyers Say
Buyers often praise its supportive feel, softness, easy-to-remove cover, and crate fit. Reviews also mention good washing performance. A recurring caution is that determined chewers or scratchers can damage the fabric.
Best For
A 45 lb dog using a large crate or one that strongly prefers extra stretching room.
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How to Choose the Right Pet Product
For a 45 lb dog, I start with sleeping style rather than weight alone. A stocky dog that curls tightly may be perfectly comfortable on a 35-inch bed, while a long-legged dog weighing exactly the same could need 38–41 inches.
Measure your dog while sleeping. Measure from nose to rump or outstretched paws and add several inches. Product dimensions can be misleading on bolster beds because the raised sides reduce usable interior space.
Consider foam thickness. Around 3 inches can work well for healthy adult dogs, while thicker orthopedic designs may feel more substantial for older dogs or pets that spend long periods resting.
Look for easy cleaning. I strongly prefer removable, machine-washable covers. Waterproof liners or barriers are also useful for puppies, seniors, muddy dogs, and pets prone to accidents.
Check stability. A non-slip base is particularly useful on hardwood, laminate, and tile.
Match the design to sleeping habits. Bolsters suit dogs that curl up or use an edge as a pillow. Flat mattresses make more efficient use of their dimensions and work particularly well in crates.
Finally, don't treat the manufacturer's size label as the deciding factor. “Medium,” “large,” and “XL” vary dramatically between brands. Actual dimensions matter much more.
FAQs
What size dog bed should I get for a 45 lb dog?
For many 45 lb dogs, I would start around 35–38 inches long. A long-bodied or fully stretched sleeper may be more comfortable on a 38–41-inch bed.
Is a 36-inch dog bed big enough for a 45 lb dog?
Often, yes. A roughly 36 x 27-inch bed can provide plenty of space for many dogs in this weight range. Just remember that thick bolsters reduce the usable sleeping area.
Should a 45 lb dog use an orthopedic bed?
An orthopedic bed isn't limited to senior dogs. Supportive foam can provide a stable sleeping surface for healthy adult dogs as well. Older dogs or dogs with mobility concerns may particularly benefit from an appropriately supportive bed, although medical issues should be discussed with a veterinarian.
Is memory foam or egg-crate foam better for a 45 lb dog?
Both can work. Memory foam provides a contouring feel, while egg-crate foam distributes pressure while promoting airflow through its textured structure. I care more about adequate thickness and good-quality construction than choosing one type exclusively.
Should I buy a large or XL bed for a 45 lb dog?
Usually large is sufficient, but sleeping style matters. I would choose XL when the dog is unusually long, stretches completely out, shares the bed, or needs to fill a larger crate.
Conclusion
For most 45 lb dogs in 2026, my Best Overall choice is the BFPETHOME Orthopedic Washable Large Dog Bed because its approximately 36 x 27-inch dimensions, supportive construction, and bolstered layout are especially well matched to this weight range.
My Best Value pick is the Sunheir Washable Orthopedic Large Dog Bed Removable Cover. Its simpler 35 x 22-inch mattress design gives owners orthopedic foam, waterproof protection, and washable materials without unnecessary bulk.
For my Best Premium Choice, I'd choose the EHEYCIGA Orthopedic Dog Bed Large Memory Foam with Sides because of its thick foam construction, generous 36 x 27-inch footprint, waterproof protection, washable cover, and supportive sofa-style shape.
For an average 45 lb dog, I would start with a 35–38-inch orthopedic bed and choose the final size based on the dog's actual body length and preferred sleeping position.
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