Shetland Sheepdog Puppy Weight Calculator

Calculate the adult weight for your Shetland Sheepdog. Just type your puppy’s current weight and age, and see how big your puppy gets.

Shetland Sheepdog Breed Overview

The Shetland Sheepdog, affectionately called the “Sheltie,” originated in the Shetland Islands of Scotland, where they were bred as agile herding dogs. Resembling a miniature Rough Collie, Shelties are highly intelligent, trainable, and devoted to their families. They are known for their alert expression, luxurious double coat, and affectionate nature.

Shetland Sheepdogs fall into the small-to-medium size category, with most adults weighing between 15 and 25 lbs. While they grow faster than large breeds, monitoring growth is important to prevent joint strain, obesity, and developmental issues. Because Shelties are active and agile, proper weight tracking ensures they develop strong muscles without carrying excess weight (American Kennel Club).

Shetland Sheepdog Growth Chart & Weight Ranges

Age	Average Weight (Male)	Average Weight (Female)
4 weeks	2–3 lbs (0.9–1.4 kg)	1.8–2.8 lbs (0.8–1.3 kg)
8 weeks	4–6 lbs (1.8–2.7 kg)	3.5–5.5 lbs (1.6–2.5 kg)
3 months	7–9 lbs (3.2–4.1 kg)	6–8 lbs (2.7–3.6 kg)
6 months	12–16 lbs (5.4–7.3 kg)	11–15 lbs (5–6.8 kg)
9 months	15–21 lbs (6.8–9.5 kg)	14–19 lbs (6.4–8.6 kg)
12 months	17–25 lbs (7.7–11.3 kg)	15–23 lbs (6.8–10.4 kg)

Note: Males are typically 2–4 lbs heavier and may have a slightly larger frame than females.

How Much Bigger Will My Shetland Sheepdog Puppy Get?

Most Sheltie puppies reach 50% of their adult weight by about 5 months. A good estimation method is to double their weight at 16 weeks for a close prediction of adult size.

Note: They usually reach their full height by 10–12 months, but may continue to fill out in muscle and coat density for several more months.

Shetland Sheepdog Growth Tips

Nutrition

• Feed a high-quality small-breed puppy food rich in protein and healthy fats.
• Offer 3–4 small meals daily until 6 months, then transition to 2 meals per day.
• Avoid overfeeding—Shelties can gain weight quickly if their activity level drops.

Exercise

• Provide daily walks, playtime, and mental stimulation through training or puzzle toys.
• Avoid repetitive high-impact activities during puppyhood to protect developing joints.

Health Watch

• Common growth-related concerns include hip dysplasia, luxating patella, and Collie eye anomaly (Shetland Sheepdog Club of America).
• Regular vet checkups and keeping your Sheltie at a healthy weight will help prevent long-term joint issues.