Health

Mortality

American Cocker Spaniels in UK and USA/Canada surveys had a median lifespan of about 10-11 years, which is on the low end of the typical range for purebred dogs, and 1-2 years less than other breeds of their size. 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 (23%), old age (20%), cardiac (8%), and immune-mediated (8%). In a 2003 USA/Canada Health Survey with a smaller sample size, the leading causes of death were cancer, hepatic disease, and immune-mediated

Morbidity

American Cocker Spaniels are susceptible to a variety of maladies, particularly infections affecting their ears and, in some cases, their eyes. An unknown percentage of the breed may require medical attention. Although the number or percent of afflicted dogs is not known the following eye conditions have been identified in some members of the breed: Progressive retinal atrophy (PRA), glaucoma, and cataracts. The American Spaniel Club recommends annual eye exams by a veterinary ophthalmologist for all dogs that are bred. Autoimmune problems in Cockers have also been identified in an unknown number or percent of the breed, including autoimmune hemolytic anemia (AIHA). Ear inflammations are common in drop-eared breeds of dog. Luxating patellas and hip dysplasia have been identified in some American Cocker Spaniels. Puppy buyers should make sure that breeders have checked their sires and dams for these conditions. Dogs free of hip dysplasia can be certified by the Orthopedic Foundation for Animals (OFA).

"Rage Syndrome"

Rage Syndrome is described as when a dog attacks suddenly and savagely, without any warning and during the attack the dog often has a glazed look and appears to be unaware of its surroundings. A study in the 1990s of English Cocker Spaniels in Britain found it is more common in solid colored Cockers than in particolors and also more common in darker colored Cockers than lighter colored Cockers, being most common in solid black colored spaniels. Rage syndrome is most often associated with the English Cocker Spaniel breed, although cases have been found in other breeds. Cases are relatively rare even within the English Cocker Spaniel breed. Rage syndrome cannot be accurately predicted and can only be diagnosed by EEG or genetic testing and these tests are not conclusive. There are no studies linking 'rage syndrome' to the American Cocker Spaniel.