PetCavaliers are one of the most loving companion breeds — and one of the most challenging from a health standpoint. The breed-wide prevalence of mitral valve disease is the single most important fact for prospective owners. Insurance is one of the few ways to make the financial picture manageable.
Cavalier King Charles Spaniel at a glance
| Typical adult weight | 5.5–8 kg |
| Height | 30–33 cm at the shoulder |
| Lifespan | 9–14 years |
| Breed group | Toy (companion spaniel) |
| Coat & shedding | Medium, silky coat; moderate shedding, regular brushing |
| Energy level | Moderate — adaptable lap-and-walk companion |
| Insurance snapshot | Moderate-to-high premiums; near-universal heart disease makes enrolling before the first murmur the single biggest factor |
Common Cavalier King Charles Spaniel health issues
| Condition | How common | Typical treatment cost (CAD) |
|---|---|---|
| Mitral valve disease (MVD) | Eventually affects the majority of Cavaliers, often by age 5–7 | Lifelong cardiac medication; severe cases may need specialist care |
| Syringomyelia (Chiari-like malformation) | Notable in the breed | MRI diagnosis + ongoing management; surgery in severe cases |
| Eye conditions (dry eye, cataracts, retinal dysplasia) | Common | Diagnostic to ongoing treatment |
| Patellar luxation | Common in small breeds | Moderate if surgery required |
| Dental disease | Common in smaller breeds | Moderate per cleaning, recurring |
| Hip dysplasia | Moderate | Variable based on severity |
Our Recommendation
For a Cavalier King Charles, comprehensive coverage enrolled as young as possible is essentially mandatory. The breed's heart disease is so prevalent that delaying enrollment until symptoms appear means the most important condition becomes pre-existing and excluded. Choose 80–90% reimbursement and a reasonable annual cap; lifetime cardiac management is the dominant cost.
What drives a Cavalier's insurance cost
One condition dominates: mitral valve disease (MVD), which eventually affects a majority of Cavaliers, often by age 5–7 — far earlier than most breeds. That means lifelong cardiac medication and monitoring (~$50–$300/month plus diagnosis). The breed also carries syringomyelia (a neurological condition needing MRI to diagnose), eye conditions, small-breed dental disease (~$650–$1,300 per cleaning), and patellar luxation.
How to structure coverage for a Cavalier
Enrolling early isn't just advisable here — it's the whole game. Once a heart murmur is on the record, the entire cardiac category becomes pre-existing and excluded, and that's the breed's biggest expense. Enrol at 8 weeks with comprehensive 80–90% coverage and a reasonable cap, well before the murmur typically appears, so MVD is covered when it inevitably arrives.