Use this Welsh Terrier puppy weight calculator to predict how big your puppy will get. Welsh 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.
A practical pick for medium-sized breeds.
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| Age | Weight |
|---|---|
| Birth | 0.4 to 1 lbs |
| 2 Months | 3 to 4 lbs |
| 3 Months | 5 to 6 lbs |
| 4 Months | 7 to 8 lbs |
| 5 Months | 9 to 10 lbs |
| 6 Months | 11 to 12 lbs |
| 7 Months | 13 to 14 lbs |
| 9 Months | 15 to 16 lbs |
| 10 Months | 17 to 18 lbs |
| 1 Year | 19 to 20 lbs |
| 1.5 Years | 20 lbs |
| 2 Years | 20 lbs |
Estimated from typical medium-breed growth curves and the Welsh 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.
Welsh Terriers are predisposed to primary lens luxation, a painful genetic eye condition where the lens detaches — the AKC recommends a DNA test to screen for carriers — along with glaucoma (most often in dogs under 3), cataracts, hip dysplasia, and patellar luxation.
A quality diet in measured portions; dogs with joint issues or skin allergies (common in the breed) may benefit from an omega-3 supplement, worth discussing with a vet.
The wiry coat needs brushing a couple of times a week plus periodic hand-stripping or clipping to maintain shape — genuinely low-shedding, making the breed a reasonable choice for some allergy-sensitive households, though no breed is truly hypoallergenic.
Welsh Terriers need real daily exercise (1-2 hours) and a job to stay content — without it, that terrier energy turns to boredom-driven trouble. Early socialization helps with the breed's independent streak.
The Welsh Terrier originated in Wales, historically used to hunt badger, fox, and otter, with a wiry black-and-tan coat that appears in terrier paintings and prints dating back well before the breed was formally standardized. The AKC recognized the breed in 1888, the same year it was first shown at Westminster.
President John F. Kennedy owned a Welsh Terrier named Charlie, reportedly one of his favorite companions — fitting for a breed known for genuine loyalty and affection toward family alongside real terrier independence.
