In this age range, intestinal parasites are not as common a cause for constipation, but it still must be considered, especially for cats that go outside frequently. At this age, cats also mature behaviorally and become less prone to chewing foreign objects that may get stuck in the gut. However, some naughty kitties still cannot resist the urge to engage in dietary indiscretion, and as such, GI foreign body obstruction in the large intestine must still be considered a possible cause for constipation. Most commonly at this age in cats who are constipated, it is the result of primary large intestinal dysfunction known as megacolon. For more information on these diseases, please refer to the articles below. If you still seek further information, please visit our Ask The Vet page to submit a one on one consultation with a licensed veterinarian 24 hours a day, 7 days a week.