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Why is my cat vomiting, foaming at mouth, and eyes constantly dilated?

Updated on September 23rd, 2025

Pet's info: Cat | Domestic Shorthair | Male | neutered

My three year old cat, has been sick four times, each time a brown/green colour. He’s been hiding under the bed, but last night suddenly shot around the house foaming at the mouth. Thetr was a noticeable amount of foam. His eyes are constantly dilated and do not change if light is shown to him. Please advise, Thankyou x

1 Answer

Most Helpful Answer

Ana M, DVM

Answered By Ana M, DVM

Veterinarian

Published on April 11th, 2018

Thank you for submitting your question regarding Bagheera. I would recommend that he sees his veterinarian to determine not only the cause of vomiting, but as to why his pupils are dilated and not responding. Cats will typically foam at the mouth of they taste something bitter. Is there any chance of him eating something that he shouldn't have? Human medication, household cleaner, etc? This could certainly cause the symptoms you are seeing. I hope this information helps!
Vote Icon1Pet Parents found this answer helpful

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