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.
How long does a border collie usually live?   12 to 15 years, usually. Some live 16 - 17 - 18.... up to 20 years! Border collies, being a medium sized breed, should have an average lifespan of 15 years.