Use this Border Terrier puppy weight calculator to predict how big your puppy will get. Border Terriers are a terrier breed that typically reach full size by around 12-15 months.
Enter your puppy's current weight and age to predict their adult size
Estimates based on breed growth curves. Individual dogs vary with genetics and nutrition — check with your vet for a personalized read.
Indoor/outdoor enclosure — a good fit for toy and small breeds.
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| Age | Weight |
|---|---|
| Birth | 0.2 to 1 lbs |
| 2 Months | 3 to 5 lbs |
| 3 Months | 4 to 6 lbs |
| 4 Months | 5 to 8 lbs |
| 5 Months | 6 to 9 lbs |
| 6 Months | 7 to 11 lbs |
| 7 Months | 9 to 12 lbs |
| 9 Months | 10 to 14 lbs |
| 10 Months | 11 to 15 lbs |
| 1 Year | 12 to 16 lbs |
| 1.5 Years | 12 to 16 lbs |
| 2 Years | 12 to 16 lbs |
Estimated from typical toy-breed growth curves and the Border Terrier's adult weight range. Individual puppies vary — use the calculator above for a prediction based on your puppy's actual current weight.
New breed data, growth tips, and puppy-parenting insights, plus our free printable puppy growth tracker.
Border Terriers are a generally hardy breed. Hip dysplasia and patellar luxation occur, and the breed has a documented predisposition to a paroxysmal movement disorder sometimes called "Spike's disease" (canine epileptoid cramping syndrome), causing episodic muscle cramping — usually not dangerous but worth knowing about if episodes occur.
A quality diet in measured portions matched to this breed's genuinely active working-terrier temperament.
The wiry double coat is a genuine "easy keeper" — occasional brushing and periodic hand-stripping keep it in shape, with minimal shedding.
Border Terriers are intelligent and eager but retain real terrier prey drive — secure fencing matters, and consistent, engaging training channels their energy productively.
The Border Terrier was developed along the England-Scotland border to bolt foxes from their dens for the Border Hunt in Northumberland, sharing ancestry with the Bedlington and Dandie Dinmont Terriers from the same region. The Kennel Club recognized the breed in 1920, the AKC in 1930.
Built to be small enough to follow a fox to ground yet tough enough to work all day, Border Terriers are known for a genuinely no-frills, hardy working-terrier temperament combined with real affection toward family — a favorite among terrier fanciers for combining grit with genuine tractability.
