The life expectancy of the Cavalier King Charles Spaniel is around 10-15 years, and there are a number of health issues and disorders that have been linked to this breed. This includes luxating patella, cataracts, MVD, and retinal disorders. The parents of the Cavalier King Charles Spaniel should have OFA and CERF certificates, and because these dogs or so prone to heart problems should also have clear heart examination results.