Two of the boldest small dogs in one — the Westie-Chihuahua mix (a “Chestie”) is tiny, alert and full of personality. Here's what to really expect.
The short answer
- A designer cross of the West Highland White Terrier and the Chihuahua — small, spirited and devoted.
- Size and coat vary a lot depending on which parent they favour.
- Expect a big personality — alert, brave, loyal and often vocal.
- Long-lived, but can inherit dental, heart and knee issues (Chihuahua) and skin allergies (Westie).
Parent breeds at a glance
Westie traits (1–5)
Energy4
Boldness5
Grooming4
Barkiness4
Chihuahua traits (1–5)
Energy3
Boldness5
Grooming2
Barkiness5
| Trait |
Typical for the Chestie |
| Weight |
7–20 lb (3–9 kg) — wide range |
| Height |
7–11 in |
| Coat |
Short to medium; white, cream, fawn or mixed |
| Shedding |
Low to moderate |
| Temperament |
Bold, alert, loyal, often vocal |
Care & temperament
Both parents are confident little dogs, so early socialisation and gentle, consistent training matter — it keeps the boldness friendly rather than snappy. They often bond tightly to one person and make alert little watchdogs.
Health
| From the Westie side |
From the Chihuahua side |
| Atopic skin allergies |
Dental disease (small, crowded mouth) |
| Luxating patella |
Heart conditions (murmurs) |
| Skin sensitivity |
Patellar luxation, hypoglycaemia in pups |
🐾 From one Westie owner to another —mind the teeth. Small breeds like the Chihuahua are very prone to dental disease, so daily tooth-brushing and regular checks save a lot of pain — and vet bills — down the line.
A long life can mean long-term care
Chesties often live well into their teens, and the small-breed dental and heart issues tend to surface with age. Insuring early keeps those senior years affordable.
See our Westie insurance & cost guide →
We only point to cover we'd consider ourselves. Independent owners, not insurers.
Frequently asked questions
What is a Westie-Chihuahua mix called?
Owners use “Chestie” or simply Westie-Chihuahua mix. It's a designer cross, not a recognised breed.
How big does a Chestie get?
It varies — usually 7–20 lb and 7–11 inches, depending on which parent they take after.
Are Westie-Chihuahua mixes good with children?
They can be, but their small size and bold streak mean they suit older, gentle children better. Always supervise.
Do Chesties bark a lot?
They can — both parents are alert and vocal. Early training and socialisation help keep barking in check.
🐾
About this guide. From the Westie owners at westiebakse.com. General info, not veterinary advice.
