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My cat has dark, small, infrequent poop. What helps constipation?

Updated On September 23rd, 2025

Pet's info: Cat | Domestic Mediumhair | Female | spayed | 7 years and 1 month old | 12 lbs

I think my 7 yo car is experiencing constipation. Her bowel movements have been less frequent and when she does defecate the feces are smaller and dark black.

1 Answer

Most Helpful Answer

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Answered By Linda G, MS, DVM

Veterinarian

Published on April 25th, 2019

Hello. You do need to try & get more liquids into your cat the best you can. This includes switching to a wet or canned diet, or one of the fiber responsive diets made by Royal Canin. Offering additional liquids such as beef/chicken broths or stocks & tuna water will also help. I would also add 1/8 teaspoon Miralax to her food twice a day. You can slowly, over a week or so, increase this to 1/4 teaspoon per meal. If this does not work to help soften her stool, then medical management with stool softeners like lactulose, & possibly using intestinal motility modifiers like cisapride may be necessary. But you will need to work with a vet to go this route. Try my suggestions for a few weeks & hopefully you can make things more comfortable for Baby. Thanks for using Petco Pet Education Center, formerly Petcoach.

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