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Why is my 6-year-old cat vomiting yellow foam after drinking milk?

Updated On September 23rd, 2025

My friends cat is vomiting since two days after consuming milk she is eating pedigree but not drinking milk. The vomit is yellow and was foamy on the first day but not on 2nd day she is 6yrs old. What can be done?

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1 Answer

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Answered By Linda G, MS, DVM

Veterinarian

Published on April 28th, 2020

Hello. I would stop all milk. Your cat may have developed an intolerance to milk. Offer plenty of fresh water, & low salt broths made from chicken or beef. If he continues to vomit, he may need to see a veterinarian to rule out parasites or other causes of intestinal disease that is making him unwell. Hopefully, he will be feeling much better soon & thanks for contacting Petco Pet Education Center, formerly Petcoach.

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