West Highland White Terrier
The West Highland White Terrier is a sturdy, confident small terrier with a distinctive white coat. Originally bred in Scotland for hunting vermin, Westies are spirited, friendly, and make excellent family companions.
12–16
years lifespan
15–20
lbs (male)
10–11
inches tall (male)
moderate
energy level
Temperament
How Old Is Your West Highland White Terrier in Human Years?
Use our breed-specific calculator to find out, plus get personalised health and care guidance for your dog’s exact age.
Open West Highland White Terrier Age CalculatorCommon Health Conditions
Atopic Dermatitis
Westies have very high rates of allergic skin disease.
Typical onset: 1–3 years
Idiopathic Pulmonary Fibrosis (Westie Lung Disease)
Progressive lung scarring specific to West Highland White Terriers.
Typical onset: 7–13 years
Patellar Luxation
Kneecap displacement common in small/medium breeds.
Typical onset: 1–5 years
Dental Disease
Small breeds prone to severe dental disease.
Typical onset: 1–3 years
Craniomandibular Osteopathy (CMO)
Abnormal bone growth in jaw during puppyhood.
Typical onset: 0.25–0.75 years
Lifespan Factors
The median lifespan for a West Highland White Terrier is 14 years. Key factors that influence longevity:
- atopic dermatitis
- Westie lung disease
- patellar luxation
- dental disease
When Is a West Highland White Terrier Considered Senior?
West Highland White Terriers are generally considered senior at around 10 years of age. At this point, you should increase vet visits to twice yearly and watch for age-related health changes.
Check your West Highland White Terrier’s age in human years →