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My cat has a drooling, crusty mouth sore with pus. Should I see a vet?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Male | unneutered

Hello, my male cat (at least 1 year old) has got a sore on the corner of his mouth. It is looking a little crusty and is oozing with a little bit of what looks like pus. He also seems to be drooling or just more moisture on that side of the mouth. He is still eating. I only noticed this yesterday but not sure how long it could have been there. I haven't really notciced any behavioural change. Thank you

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1 Answer

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on May 3rd, 2017

Ouch, poor Binx! I agree that it could be infected, and he's probably drooling more from the sore on the corner of his mouth. He could have injured himself causing the sore. I would have him seen by a vet for this sore because if it is infected, he will need antibiotics to treat it. I would take him into the vet today.

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