What should a Westie weigh, and how do you keep one lean? Here's the healthy weight range, a body-condition check and a puppy growth guide.
The short answer
- A healthy adult Westie weighs about 15–22 lb (7–10 kg), males a little more than females.
- They reach adult weight by around 12 months.
- You should be able to feel the ribs easily and see a waist from above.
- Even a pound or two of extra weight strains a Westie's joints, skin and heart.
Healthy weight range
|
Male |
Female |
| Weight |
≈17–22 lb |
≈15–20 lb |
| Height |
≈11 in (28 cm) |
≈10 in (25 cm) |
Is my Westie overweight?
Scales only tell half the story — body condition is what counts. Run this quick check:
- Ribs: you can feel them easily with light pressure, without pressing.
- Waist: from above, there's a visible tuck behind the ribs.
- Profile: from the side, the belly tucks up, not sags down.
- No fat pads over the hips, base of tail or chest.
🐾 From one Westie owner to another —the white coat hides a lot. Plenty of Westies are quietly carrying extra weight under all that fluff — go by what you can feel, not just what you see.
Puppy growth guide
| Age |
Typical weight |
| 8 weeks |
2–4 lb |
| 3 months |
5–8 lb |
| 6 months |
10–14 lb |
| 12 months |
15–22 lb (adult) |
Keeping a Westie lean
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Measure mealsWeigh food to the bag's guideline for target weight — eyeballing it is how the pounds creep on.
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Mind the treatsTreats should be under 10% of daily calories; use kibble from the ration for training.
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Daily exerciseA good walk plus play keeps muscle on and fat off those little joints.
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Weigh-insA quick weigh at vet visits catches creep early — before it strains the body.
Weight problems get expensive
Excess weight feeds the breed's joint, skin and mobility issues — exactly the conditions that drive vet bills. Insuring early, while your Westie is lean and healthy, keeps that care affordable.
See our Westie insurance & cost guide →
We only point to cover we'd consider ourselves. Independent owners, not insurers.
Frequently asked questions
How much should a Westie weigh?
A healthy adult Westie weighs about 15–22 lb (7–10 kg), with males slightly heavier than females.
At what age is a Westie fully grown?
Most reach their adult weight by around 12 months.
How do I know if my Westie is overweight?
You should be able to feel the ribs easily and see a waist from above. If not, it's likely time to trim portions and add exercise.
My Westie is over 22 lb — is that bad?
Not always, as some are bigger-framed, but it's usually weight to watch. Check body condition and ask your vet rather than relying on the number alone.
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About this guide. From the Westie owners at westiebakse.com. General info, not veterinary advice.
