Rheumatoid arthritis (RA) is an autoimmune disease with symptoms that vary from person to person and may include joint pain, swelling and stiffness.
Health Problems & Life Expectancy. The typical West Highland Terrier lives about 12-16 years. Of course, individual dogs can have a life span outside that range based on care and pure luck. Like all dog breeds, Westies are prone to certain diseases, disorders, and behavioral problems.
A Cocker Spaniel's lifespan is from 9 to 13 years, but it can more depending whether its show-bred or work bred. Cocker Spaniel lifespan is between 9 and 15 years.