Like with people, as your pet ages, the incidence of disease also increases. The very nature of animals is "survival of the fittest" which means that the sick try to hide it as long as possible. As pet owners, we want to do the very best for our companions to extend their time with us as long as possible. With early detection, we can often alter the course of disease thereby lengthening the life span of our companions. For this reason, older pets (over 8 years of age) should have a complete physical exam every 6 months and blood work once a year. Your veterinarian can help set up a plan for your particular pet.