How Big Will My Brussels Griffon Get?
Brussels Griffons are a small breed that typically weigh 3–5 kg (7–11 lbs) at full size. Small breeds typically reach their adult weight around 10–12 months of age.
Brussels Griffon Size at a Glance
Adult Weight
3–5 kg
7–11 lbs
Adult Height
18–20 cm
7–8 in
Size Category
small
Fully Grown By
10–12 mo
Brussels Griffon Growth Chart
Brussels Griffon Weight by Age
Predict Your Brussels Griffon Puppy's Adult Weight
Enter your puppy's current age and weight for a personalized prediction.
Open Weight CalculatorBrussels Griffon Growth & Development
Small breeds typically reach their adult weight around 10–12 months of age. They grow quickly in the first few months and then level off.
A Brussels Griffon's growth rate is fastest in the first 6 months of life. During this period, proper nutrition and regular vet checkups ensure your puppy stays on a healthy growth trajectory.
Factors that influence your Brussels Griffon's adult size include genetics (parent size), nutrition quality, spay/neuter timing, and overall health. Males typically weigh 10–20% more than females.
Frequently Asked Questions
How big will my Brussels Griffon puppy get?
A full-grown Brussels Griffon typically weighs between 3–5 kg (7–11 lbs). Males tend to be on the larger end of the range while females are usually smaller.
When do Brussels Griffons stop growing?
Small breeds typically reach their adult weight around 10–12 months of age. They grow quickly in the first few months and then level off. Individual dogs may reach their full size slightly earlier or later depending on genetics, diet, and overall health.
How much should a Brussels Griffon puppy weigh at 12 weeks?
At 12 weeks, a Brussels Griffon puppy typically weighs around 1.2–1.6 kg (3–4 lbs), which is roughly 30–40% of their adult weight.
How can I tell if my Brussels Griffon puppy is the right weight?
Compare your puppy's weight to the growth chart above. A healthy Brussels Griffon puppy should follow a steady growth curve. If your puppy's weight deviates significantly from the expected range, consult your veterinarian.
Learn More About Brussels Griffons
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