Belgian Sheepdog Puppy Weight Calculator

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

Belgian Sheepdog Breed Profile

Breed Overview

The Belgian Sheepdog, also known as the Groenendael, is one of four Belgian herding breeds and is easily recognized by its long, elegant black coat. Originating in Belgium, this intelligent and devoted working dog was bred for herding and protection duties. Today, Belgian Sheepdogs excel in obedience, agility, police work, and as loving family companions. They are alert, loyal, and thrive in active households where they can stay mentally and physically engaged.

As a large breed, the Belgian Sheepdog grows quickly in the first year. Monitoring weight gain and growth helps prevent bone and joint issues, especially given their athletic build and high energy levels. To learn more about this breed’s background and standards, visit the American Belgian Sheepdog Club.

Belgian Sheepdog Growth Chart & Weight Ranges

Below is a general guide to the typical growth progression of Belgian Sheepdog puppies.
Note: Males are typically 5–10 lbs heavier than females at full maturity.

Age	Avg Male Weight	Avg Female Weight
4 weeks	4 – 6 lbs	3 – 5 lbs
8 weeks	10 – 14 lbs	8 – 12 lbs
3 months	20 – 28 lbs	18 – 25 lbs
4 months	28 – 36 lbs	24 – 32 lbs
6 months	40 – 52 lbs	34 – 46 lbs
9 months	52 – 64 lbs	45 – 56 lbs
12 months	60 – 70 lbs	50 – 65 lbs

Adult Size Range:

• Males: 65–75 lbs
• Females: 50–65 lbs

How Much Bigger Will My Belgian Sheepdog Puppy Get?

Belgian Sheepdog puppies typically reach about 50% of their adult weight by 4 months and 75% by 6–7 months. Growth slows but continues until around 12–14 months of age.

Rule of Thumb:

You can estimate an adult dog’s weight by doubling the puppy’s weight at 16 weeks.

Note:

Although Belgian Sheepdogs are not a giant breed, some individuals may continue filling out in muscle mass until 18 months.

Belgian Sheepdog Growth Tips

Nutrition

• Feed a large-breed puppy formula 3–4 times daily until 6 months, then transition to twice-daily meals.
• Look for food high in quality protein with joint-supportive nutrients like glucosamine.
• Avoid overfeeding to minimize risk of orthopedic issues like hip dysplasia.

Exercise

• Engage in low-impact play like short walks, mental games, and basic training in early months.
• Avoid jumping or stair running until joints are more developed (typically after 12 months).
• Daily stimulation—both physical and mental—is crucial to prevent boredom and destructive behavior.

Health Watch

Growth-related health concerns include:

• Hip and elbow dysplasia – Common in large, active breeds.
• Panosteitis – Bone inflammation that can cause lameness in rapidly growing puppies.
• Gastrointestinal sensitivity – Gradual diet transitions help avoid upset stomachs.