The most common causes for constipation in a cat this age are intestinal parasites or foreign bodies lodged in the large intestine. However, primary constipation from a large intestinal dysfunction called megacolon is occassionally seen in cats this young. 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.
Intestinal parasites
GI foreign body obstruction
Megacolon
there are 2 cats, i large male Cody(14+ lbs) and his sister, Cheyenne, (11 lbs). Lately I have seen Cheyenne acting very listless and when I picked her up she feel underweight and bony. I noticed that Cody was eating Cheyenne’s wet food before she even got 1/3 through her 1.5 oz if food. I have now stopped that and make sure she is eating and she is eating most of her food about 80%. The only thing I haven’t see is any poop. This has been for about 2 days. She is peeing. Only poop has been his. How do I get her to poop?