Border Collie Size, Weight, Height & Harness Guide
The Border Collie
Border Collies are medium-sized, highly athletic dogs with lean builds. Their agility and energy levels mean they benefit from lightweight, well-fitted harnesses that allow full movement.
Quick Answer: What Size Harness for a Border Collie?
Most Border Collie owners choose a Medium (M) harness.
Typical chest size: 55–75 cm (22–29 inches)
Most Border Collies fit comfortably in a Medium harness.
View suitable harnesses for Border Collies
Border Collie Size & Measurements
Weight
Male: 14–20 kg
Female: 12–19 kg
Height
Male: 48–56 cm
Female: 46–53 cm
Chest Size
55–75 cm
Neck Size
35–45 cm
Recommended Fit
Harness: Medium (M)
Collar: Medium (M)
How to Measure a Border Collie
- Chest: widest part of the ribcage
- Neck: natural collar position
Ensure a flexible fit that allows free movement.
About Border Collies
Border Collies are extremely intelligent and energetic dogs bred for herding. Their lean, agile build requires harnesses that support movement without restriction.
Best for: Active owners, working environments
Energy level: Very high
Build: Lean, athletic
Best Harness for Border Collies
Border Collies are highly athletic dogs that need equipment capable of keeping up with their energy levels. We recommend the Active Cordura® Harness for its freedom of movement, comfort, and durability that collies require.
Browse Y-shape harnesses for active dogs
Browse personalized dog harnesses
Helpful Links
- Border Collie Chest Size Guide
- Border Collie Neck Size Guide
- Harness Size Guide
- Weight Chart
- Height Chart
- All Breed Guides
FAQs
How much food should a Border Collie eat?
Typically 1.5–2.5 cups per day depending on activity level.
Do Border Collies need a harness?
Yes, especially for control during high-energy walks.
Are Border Collies easy to fit?
Yes, their proportions are generally straightforward.
What size collar does a Border Collie need?
Most wear Medium collars.
Do Border Collies pull on the lead?
They can, especially when overstimulated.
When is a Border Collie fully grown?
Around 12–15 months.
Are Border Collies high maintenance?
Yes, they require significant mental and physical stimulation.