Lifespan
American Cocker Spaniels have an average lifespan of about 12 to 15 years. The larger English Cocker Spaniel typically lives about a year longer than the American Cocker Spaniel.
In a 2004 UK Kennel Club survey the most common causes of death were cancer, old age, cardiac related issues, and immune-mediated issues. In a 2003 US and Canadian health survey with a smaller sample size the leading causes of death were cancer, hepatic disease, and immune-mediated issues
Common Health Problems
American Cocker Spaniels are susceptible to a variety of maladies, particularly infections affecting their ears and, in some cases, their eyes. As a result, they may require more medical attention than some other breeds. Common eye problems in Cockers include progressive retinal atrophy (PRA), glaucoma, and cataracts. The American Spaniel Club recommends annual eye exams by a veterinary ophthalmologist for all dogs used for breeding.
Autoimmune problems in Cockers include autoimmune hemolytic anemia (AIHA) and ear inflammations. Less common are luxating patellas and hip dysplasia. Dogs used for breeding can be checked for both of these conditions, and dogs free of hip dysplasia can be certified by the Orthopedic Foundation for Animals (OFA).