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What Size Collar & Harness for a Old English Sheepdog?

For an adult Old English Sheepdog, a L collar and XL harness are the usual starting point, based on a typical neck of 46–56 cm and chest of 71–91 cm. But every dog is different — measure yours and use the two-finger rule before buying.

Collar: L  ·  Harness: XL
Typical neck 46–56 cm · chest 71–91 cm · weight 27–45 kg
⚠️ Measure your dog — breed is only a starting point. A Old English Sheepdog's build varies a lot between individuals, and a collar is a safety item. Measure the neck snug, add about 2-3 cm (the two-finger rule), and confirm against the specific collar's size guide before buying.
🐕 Breed note: Measure with the fur pressed flat, then consider sizing up — a thick coat needs extra room and can hide the true neck size.

Typical measurements for an adult Old English Sheepdog:

Typical rangeRecommended size
Neck (collar)46–56 cm (18–22 in)L
Chest (harness)71–91 cm (28–36 in)XL
Weight27–45 kg

Got a tape measure handy? The collar & harness calculator turns your exact measurement into a size with the two-finger fit built in.

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