Dog Kennel Sizing Guide: Breed-Specific Recommendations 2026

The Complete UK Breed Guide for Perfect Kennel Sizing

Choosing the wrong kennel size is the #1 mistake UK dog owners make when investing in outdoor housing. A kennel that's too small restricts your dog's movement and comfort, while understanding proper sizing ensures your dog has a safe, comfortable outdoor home they'll actually enjoy using.

This comprehensive guide covers everything you need to know about dog kennel sizing, from simple sizing formulas to breed-specific recommendations for over 30 popular UK breeds. Whether you're buying your first kennel or upgrading, you'll find the exact dimensions your dog needs.

What you'll learn: How to measure your dog correctly, breed-specific size charts, sizing formulas, common sizing mistakes, and how to choose between our kennel ranges.

Quick Kennel Sizing Formula

Use these simple formulas to determine the perfect kennel size for your dog:

Kennel Width: Dog length + 30-45cm (12-18")
Kennel Depth: Dog length + 30-45cm (12-18")
Kennel Height: Dog height × 1.5 (measured at shoulder)
Run Length: Minimum 2× dog length (3× ideal for active breeds)

How to Apply the Formula

First, measure your dog using the method below, then add the recommended extra space. Always round up to the nearest standard size - it's better to go larger than to squeeze your dog into a tight space.

How to Measure Your Dog for a Kennel

Accurate measurements are essential for choosing the right kennel size. You'll need a tape measure and your dog standing in a relaxed position.

Step 1: Measure Height
Measure from the floor to the top of your dog's shoulder blade (the withers - the highest point of the shoulder when standing). Do NOT measure to the top of the head, as head position varies. The shoulder height is your dog's true standing height. Use a tape measure held vertically, or have your dog stand against a wall and mark the shoulder height.

Step 2: Measure Length
Measure from the tip of your dog's nose to the base of their tail where it meets the body. Do NOT include the tail itself in this measurement. Your dog should be standing in a natural position, not stretched out. This gives you the body length needed for kennel depth and width calculations.

Step 3: Note the Weight
While weight alone doesn't determine kennel size, it helps confirm you're in the right size category and ensures the kennel structure is robust enough. A 30kg Labrador and a 30kg Bulldog need different sized kennels due to their different builds, but both need kennels rated for their weight.

Important Tips:

• Measure when your dog is calm and standing naturally
• Take measurements twice to ensure accuracy
• For puppies, research the expected adult size for their breed
• If between sizes, always choose the larger option
• Account for thick winter bedding when calculating space

Breed-Specific Size Recommendations

Here are detailed size recommendations for the UK's most popular dog breeds, organized by size category. These recommendations account for both physical dimensions and breed-specific activity levels.

Small Breeds (Under 10kg)

Breed	Typical Weight	Min. Kennel Size	Recommended Run	Notes
Jack Russell Terrier	6-8kg	90cm × 90cm	180cm	High energy - longer run beneficial
Cavalier King Charles	5-8kg	85cm × 85cm	170cm	Less active - standard run fine
Miniature Dachshund	4-5kg	80cm × 80cm	160cm	Low clearance needs
Pug	6-8kg	85cm × 85cm	170cm	Brachycephalic - extra ventilation essential
Yorkshire Terrier	3-4kg	75cm × 75cm	150cm	Smallest standard size

Medium Breeds (10-25kg)

Breed	Typical Weight	Min. Kennel Size	Recommended Run	Notes
Cocker Spaniel	12-15kg	105cm × 105cm	210cm	Active breed - needs good space
Border Collie	14-20kg	120cm × 120cm	240cm	Highly active - maximum run recommended
Beagle	10-11kg	100cm × 100cm	200cm	Moderate activity level
Springer Spaniel	20-25kg	120cm × 120cm	240cm	Working breed - generous space needed
Staffordshire Bull Terrier	11-17kg	110cm × 110cm	220cm	Muscular build - sturdy construction

Large Breeds (25-45kg)

Breed	Typical Weight	Min. Kennel Size	Recommended Run	Notes
Labrador Retriever	25-36kg	135cm × 135cm	270cm	UK's most popular - needs room to move
Golden Retriever	25-34kg	135cm × 135cm	270cm	Similar requirements to Labrador
German Shepherd	30-40kg	150cm × 150cm	300cm	Large, active - maximum space recommended
Boxer	25-32kg	135cm × 135cm	270cm	Energetic - good ventilation needed
Rottweiler	35-60kg	150cm × 150cm	300cm	Large frame - robust build needed

Extra Large Breeds (45kg+)

Breed	Typical Weight	Min. Kennel Size	Recommended Run	Notes
Great Dane	50-90kg	180cm × 180cm	360cm	Tallest breed - height critical
Bernese Mountain Dog	40-55kg	165cm × 165cm	330cm	Thick coat - shade essential
Newfoundland	60-70kg	180cm × 180cm	360cm	Giant breed - maximum dimensions
Irish Wolfhound	55-70kg	180cm × 180cm	360cm	Tallest breeds - custom often needed
St Bernard	65-120kg	180cm × 180cm	360cm	Heaviest breeds - reinforced floor recommended

Special Sizing Considerations

Multiple Dogs

When housing multiple dogs together, space calculations change:

Two dogs of similar size: You need approximately 1.75× the space of a single dog kennel, not double. Dogs sharing space use it more efficiently - they don't both need full turning circles simultaneously.

Two dogs of different sizes: Calculate the kennel size for the larger dog, then add 50% extra space for the smaller dog. For example, a Labrador (135cm kennel) plus a Cocker Spaniel would need approximately 150-165cm.

Three or more dogs: We recommend custom consultation for three or more dogs, as dynamics become more complex and individual temperaments matter significantly.

Separate vs shared kennels: Consider using dividers if dogs need occasional separation for feeding, rest, or behavioral management.

Puppies & Growing Dogs

Measure expected adult size: Use breed standards to determine your puppy's adult dimensions. Most breeds reach full size between 12-18 months, though giant breeds may take up to 2 years.

Don't buy too early: If your puppy won't reach adult size for more than 6 months, an adult-sized kennel may feel overwhelming. Consider a medium-term solution or adjustable options.

When to upgrade: Plan to upgrade when your growing dog can no longer stand comfortably or turn around easily in their current kennel.

Senior & Special Needs Dogs

Arthritis considerations: Older dogs with joint issues benefit from lower entry thresholds and more floor space to move carefully. Consider ramp access if needed.

Reduced mobility: Dogs with mobility challenges need extra space for careful turning and lying down. Avoid tight spaces that require precise movements.

Medical equipment: If your dog requires special bedding, water stations, or medical equipment, factor in this additional space when sizing.

UK Climate Considerations

Insulation and usable space: In UK weather, insulated kennels are essential. Remember that insulation panels reduce internal dimensions slightly, so account for this when measuring.

Summer ventilation: Adequate airflow is crucial in warmer months. Ensure your kennel has proper ventilation without compromising security or weatherproofing.

Winter bedding: Dogs need space for insulated bedding plus room to move. A kennel that seems adequate in summer may feel cramped once winter bedding is added.

Covered run areas: UK weather means rain protection is valuable. Consider covered run sections so your dog can exercise in comfort year-round.

Common Sizing Mistakes to Avoid

Learn from these frequent errors to get your kennel sizing right first time:

Mistake #1: Measuring total length including tail
Measure only to the base of the tail, not the tip. Tail length doesn't affect space requirements.

Mistake #2: Relying on weight charts alone
Two dogs of the same weight can have vastly different builds. A 30kg Labrador needs more space than a 30kg Bulldog due to height and activity level differences.

Mistake #3: Not accounting for bedding and bowls
Your dog needs floor space beyond just their body. Water bowls, food bowls, and bedding all take up room.

Mistake #4: Forgetting dogs need to turn around
Dogs should be able to turn around comfortably without a complex maneuver. This requires width and depth beyond just their standing length.

Mistake #5: Undersizing the run
The kennel is primarily for sleeping and shelter. The run is where your dog spends active time. Don't skimp on run length.

Mistake #6: Not planning for seasonal changes
A kennel that works in summer may feel cramped in winter when thick bedding is added. Plan for maximum bedding needs.

Mistake #7: Ignoring breed-specific activity needs
A Border Collie and a Basset Hound of similar size have very different exercise and space requirements. Active breeds need more generous dimensions.

Kennel Height Requirements Explained

Height is often misunderstood but is critical for your dog's comfort.

The minimum rule: Kennel height should be at least 1.5× your dog's shoulder height (measured at the withers, not the head). This allows comfortable standing without crouching.

Why shoulder height matters: Dogs stand at their shoulder height when relaxed. Head height varies with head position and isn't a reliable measure.

Apex vs pent roofs: Apex (pitched) roofs provide more internal height at the center, while pent (sloped) roofs have consistent height. Both work well if internal clearance meets the 1.5× rule.

Tall breed specifics: Great Danes, Irish Wolfhounds, and other tall breeds often need custom height solutions. Standard kennels may not provide adequate clearance.

Ventilation relationship: Adequate height also improves air circulation, which is essential for temperature regulation and comfort.

Run Length & Exercise Space

The run is where your dog spends active outdoor time, so size it generously.

Minimum standard: 2× your dog's body length is the absolute minimum for a functional run.

Recommended: 3× dog length for active breeds like Spaniels, Collies, and Retrievers.

Ideal: 4× dog length for working breeds and high-energy dogs that spend significant time in the kennel.

Width considerations: Run width should match or exceed kennel width to allow comfortable movement and turning.

Multiple dogs: When dogs share a run, length becomes even more critical. They need space to move past each other and play without collision.

Exercise vs containment: Remember, a run isn't a replacement for walks and proper exercise. It's a safe outdoor space for fresh air and light activity between walks.

Covered sections: In the UK climate, partially covered runs allow year-round use regardless of weather.

Frequently Asked Questions

Can a dog kennel be too big?

Generally no - dogs appreciate extra space and won't feel "lost" in a larger kennel. However, in very cold climates, oversized kennels can be harder to keep warm with body heat alone. For UK weather, err on the side of larger. The exception is puppies during crate training, who may feel insecure in vastly oversized spaces, but this doesn't apply to outdoor kennels for adult dogs.

What size kennel for a Labrador and Springer Spaniel together?

For a Labrador (30kg) and Springer Spaniel (23kg) sharing, you'd need approximately 150cm × 150cm internal space - that's the large dog size plus 40-50% extra. A 180cm run length minimum is essential, though 240cm+ is ideal for these active breeds who will want to move around together.

Do I measure my dog standing or lying down?

Always measure standing. Height is measured from floor to shoulder (withers), and length from nose to base of tail. Lying down measurements aren't relevant for kennel sizing because dogs need to stand, turn, and move comfortably.

How much bigger than my dog should the kennel be?

Add 30-45cm (12-18 inches) to your dog's length for both width and depth. For height, multiply shoulder height by 1.5. This ensures comfortable movement, turning, and standing without restriction.

What size kennel for a puppy that's still growing?

Measure the expected adult size based on breed standards, not current puppy size. If your puppy won't reach adult size for 6+ months, consider a medium-term solution rather than an oversized kennel they'll feel overwhelmed in now. Most puppies reach adult size by 12-18 months (longer for giant breeds).

Can two small dogs share a medium kennel instead of two small kennels?

Yes, this often works well. Two 8kg dogs don't need double the space - about 1.75× a single-dog kennel is sufficient since they share space efficiently. A 120cm × 120cm medium kennel typically suits two small breeds comfortably, provided they get along well.

Does kennel size affect house training?

For puppies being crate trained indoors, yes - an oversized crate allows them to toilet in one corner and sleep in another, undermining training. However, for outdoor adult kennels, size is about comfort and exercise space, not training. Outdoor kennels should be generously sized.

What's the minimum kennel size legally required in the UK?

While there's no specific law for pet dog kennels, the Animal Welfare Act 2006 requires adequate space for normal behavior and welfare. Our recommendations exceed basic welfare minimums - they're based on comfort, quality of life, and best practices from 15 years of kennel manufacturing experience.

How do I know if my dog's current kennel is too small?

Warning signs include: cannot stand fully upright without crouching, cannot turn around easily, reluctant to enter the kennel, cannot stretch out fully when lying down, or appears cramped. If you observe any of these, measure your dog and compare to our sizing recommendations.

Do outdoor kennels need to be bigger than indoor crates?

Yes, significantly. Indoor crates are temporary rest spaces used for short periods. Outdoor kennels are living spaces where dogs spend extended time, so they need substantially more room for movement, play, and comfort. Apply our outdoor kennel sizing formulas, not indoor crate guidelines.

Next Steps: Choosing Your Perfect Kennel

Now that you understand proper kennel sizing, you're ready to make an informed choice for your dog.

Key takeaways:

• Always round up, never down when choosing between sizes
• Measure your dog at shoulder height and nose-to-tail-base length
• Add 30-45cm to length measurements for width and depth
• Multiply shoulder height by 1.5 for minimum kennel height
• Size runs at minimum 2× dog length, ideally 3× for active breeds
• Account for bedding, bowls, and seasonal changes

Remember: Size is just one factor in choosing a quality kennel. Construction quality, weatherproofing, and durability matter enormously. Our pressure-treated timber kennels are built to last with a 15-year guarantee, ensuring your investment provides decades of reliable service.

Ready to find your perfect kennel? Browse our complete range of wooden dog kennels, or read our complete buyer's guide for help choosing between kennel styles, materials, and features.

Questions about sizing for your specific situation? Our team has 15 years of experience helping UK dog owners choose the perfect kennel. Contact us for personalized advice.