A NZ specialist cardiology service names Cavaliers as especially vulnerable to mitral valve disease, the most common heart condition treated in dogs and cats.
Veterinary Specialists Aotearoa describes mitral valve disease as "the most common heart condition we treat in dogs and cats," typically appearing in small to medium dogs at ages 8 plus, but they single out Cavalier King Charles Spaniels, alongside Dachshunds and Poodles, as "especially vulnerable," implying earlier onset and higher lifetime risk than the general dog population.
As a progressive, chronic cardiac condition rather than a single treatable event, mitral valve disease typically means ongoing monitoring and medication rather than one surgical bill, which makes how a policy handles long-term illness management worth checking closely for this breed.
These are the conditions FurWise flags when you select Cavalier King Charles Spaniel in the comparison tool, so you can check whether each policy covers them. When 2 or more high-severity conditions apply, we highlight hereditary & congenital coverage and exclusions breadth for your comparison.
Hereditary and congenital conditions are handled very differently across NZ insurers Some treat them favourably (coverable if asymptomatic before the policy started), others use a flat age-of-pet cutoff, and a few don't address them as a defined term at all. See FurWise's hereditary conditions and congenital conditions explainers.
Any information shown on FurWise is not financial advice. FurWise is a features comparison tool. It's a helpful starting point so you can understand how pet insurance policies in New Zealand work. If you are still unsure about what might be right for you after using FurWise, we strongly recommend you seek independent advice from a financial adviser about your specific situation.