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What causes smelly yellow diarrhea in a 6-month-old kitten?

Updated on September 23rd, 2025

Pet's info: Cat | Mixed Breed | Female | spayed | 6 months and 20 days old | 5 lbs

My 6 month old kitten has very smelly, yellow diarrhea. What could be wrong?

1 Answer

Most Helpful Answer

Dr. Melanie, BVSc MS

Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on November 21st, 2016

Poor Willow! This diarrhea could be caused by GI illness, Giardia infection, Coccidia infection, eating something rotten, a foreign body, or intestinal parasites. The yellow color indicates it's traveling very quickly through the GI tract. I would take her into the vet with a sample of her feces for an exam. The vet can examine her feces, do a physical exam, routine blood tests, and a urinalysis to diagnose what is causing her diarrhea, and can treat accordingly.
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