Wondering how big your Norfolk Terrier puppy will get? Use the calculator below: enter your puppy’s age and current weight to see a personalized growth curve and an adult weight estimate.
Estimates combine your puppy’s current trajectory with typical growth curves for this breed and size class. Individual dogs vary — nutrition, genetics and neuter timing all matter. For health concerns, ask your vet.
The Norfolk Terrier is a toy-sized breed. Adult males typically weigh 11–12 lb (5.0–5.4 kg) and females 11–12 lb (5.0–5.4 kg). Most Norfolk Terriers reach about half their adult weight around 3.2 months, hit 90% by roughly 6.7 months, and are fully grown near 9 months. Toy breeds finish growing fastest of all dogs — most of their gain happens before six months.
When do Norfolk Terriers stop growing?
Most Norfolk Terriers reach their full adult height and weight by about 9 months. Growth is fastest before 3.2 months, then slows steadily — by 6.7 months your puppy will be about 90% of its final size.
How much should a Norfolk Terrier puppy weigh at 4 months?
A typical 4-month-old Norfolk Terrier weighs roughly 7–8 lb, about 64% of its adult weight. Use the calculator above with your puppy’s exact weight for a personalized estimate — individual dogs vary.