On average, a Cavalier lives 9 to 14 years. That’s a pretty wide window. Think of it like a box of chocolates—you never know exactly which year you’ll get.
Some lucky pups hit 15 or even 16. That’s ancient in dog years. That’s like a human turning 80 and still doing crossfit.
But here’s the twist: Cavaliers have a longer lifespan than many big breeds. Great Danes? They top out around 8. So those floppy ears are a long-haul investment in cuddles.
The Quirky Genetics Factor
Cavaliers are a double-edged sword of cuteness. They were bred to be lap dogs for royalty. Think King Charles II (yes, the actual king). That royal lineage comes with a price.
They have a weirdly high risk of heart murmurs. Specifically, something called mitral valve disease. It’s the #1 reason they check out early. But don’t panic—it’s manageable with vet checkups.
Fun fact: about half of all Cavaliers show signs of heart issues by age 5. That sounds scary, but it also means you can catch it early. It’s like knowing your car needs oil changes every 3,000 miles.
