How big does a Border Collie get? Adult weight is 30-55 lbs, and growing usually finishes around 12 months. The curve shows the weight to expect along the way.

Age	Expected weight
2 months	6.9-12.6 lbs
3 months	12.3-22.6 lbs
4 months	16-29.3 lbs
5 months	19.3-35.3 lbs
6 months	22.5-41.3 lbs
8 months	25.9-47.5 lbs
10 months	28.4-52.1 lbs
12 months	30-55 lbs

Typical range for a healthy puppy. Individual dogs can sit above or below it.

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Border Collie Photos

Border Collie - Frequently Asked Questions

How big is a Border Collie? +

The Border Collie is a medium-sized breed, standing 18-22 in tall and weighing 30-55 lbs.

How much does a Border Collie weigh at 6 months? +

A Border Collie usually weighs 22.5-41.3 lbs at 6 months and reaches 30-55 lbs once fully grown, at around 12 months.

How long do Border Collies live? +

The average lifespan of a Border Collie is 12-15 yrs.

How much does a Border Collie cost? +

Expect to pay $600-$2,000 for a Border Collie puppy, plus around $1,000-$1,800 per year for food, vet care, grooming, and supplies.

Is a Border Collie hypoallergenic? +

No, the Border Collie is not considered hypoallergenic and may trigger symptoms in people with dog allergies.

Is a Border Collie good with kids? +

Yes - Border Collies are known for being gentle and patient with children, making them a solid family choice.

Is a Border Collie good for apartments? +

No - the Border Collie needs space and exercise that apartments rarely provide. A house with a yard is strongly recommended.

Is a Border Collie easy to train? +

Yes - the Border Collie is highly trainable, eager to please, and picks up commands quickly. Good choice for first-time owners.

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