How to Choose the Right Bed Size for Your Dog: The Only Guide You Need

Choosing a dog bed seems simple… until you realize how many shapes, sizes, and styles exist.

The truth?
The right bed size can improve your dog’s sleep, reduce joint pressure, and even reduce anxiety.
But the wrong size can leave them restless, cramped, or unsupported.

Here’s how to make the right choice the first time.

1. Start With the Golden Rule: Measure Your Dog

You only need two measurements:

✔ Length (nose to base of tail)

Have your dog stand straight. Measure from the tip of the nose to where the tail begins.

✔ Height (paw to top of back/shoulder)

This helps you estimate how much “stretch room” they need.

Write down both numbers.
You’ll add a few extra inches depending on their sleep style.

2. Add Sleep-Style Space (“The Stretch Factor”)

Dogs sleep in three main positions — and each one needs different space.

🐾 The Curlers (cozy, donut-shaped sleepers)

Add +2 to +4 inches to their length.
These dogs love round or bolstered beds.

🐾 The Stretchers (side-sleepers or belly sprawlers)

Add +6 to +10 inches for full-body comfort.
These dogs need rectangular or orthopedic beds with room to sprawl.

🐾 The Leaners (dogs who sleep pressed against something)

Add +4 to +6 inches + supportive sides.
Bolster beds or couches are great here.

If your dog switches positions often?
Choose the larger option — versatility beats tightness every time.

3. Consider Their Weight and Body Type

Different bodies need different support.

Toy & Small Breeds (0–20 lbs)

Look for:

• Light, plush beds

• Strong edge support for tiny joints

• Donut or cave-style beds for warmth

Medium Breeds (20–50 lbs)

Best option:

• Memory foam or orthopedic support

• Beds with breathable fabric

Large Breeds (50–90 lbs)

They need:

• Thick, high-density foam

• Extra inches on all sides

• Non-slip bases

Giant Breeds (90+ lbs)

Extremely important:

• XXL sizes only

• 4–6 inches of foam

• Reinforced stitching

Bed “sizes” vary by brand, so always match your dog’s measurements to their chart — not the label.

4. Think About Age and Joint Health

Sleep needs change over time.

Puppies

• Smaller beds give security

• Waterproof or washable covers are essential

• Avoid buying too large — it can worsen anxiety
  But… choose something with a little room to grow.

Adults

• Match bed to daily activity

• Moderate foam support is ideal

Senior Dogs

• Orthopedic foam

• Low bolsters for easy entry

• Larger surface area for stiff joints

If your dog has arthritis or hip dysplasia, always size up — cramped beds increase joint pressure.

5. Match the Bed to Their Behavior

A few behavioral cues help determine size:

Your dog hangs off the bed

→ Go bigger.

Your dog burrows under blankets

→ Choose a snug, high-walled bed (no need for extra inches).

Your dog sleeps belly-up

→ Choose a larger, flat mattress-style bed.

Your dog moves a lot at night

→ More space = deeper sleep.

Your dog guards their bed from others

→ They may need a more secure, slightly smaller, nest-like space.

6. Check Your Home Layout

Big dogs need space — but so does your house.

Ask yourself:

• Where will the bed stay?

• Is there room for a larger size?

• Do I need multiple beds (living room + bedroom)?

A bed that fits the dog and the home gets used more often.

7. When In Doubt… Size Up

Dogs never complain about too much space — only too little.

A larger bed:

• Reduces joint stress

• Improves circulation

• Helps with temperature regulation

• Makes anxious pups feel less trapped

• Lasts longer as the dog grows

Sizing up is almost always the safer choice.

Quick Size Guide (General Reference)

Always confirm with brand-specific measurements.

Final Thoughts

Choosing the right bed size is one of the simplest ways to improve your dog’s daily comfort.

Measure your pup, consider their sleeping habits, think about their age, and size up when unsure. A well-fitted bed means deeper rest, happier mornings, and a healthier spine and joints for years to come.

Your dog does so much for your heart. The right bed gives their body the rest it deserves.