Cat's mouth sore won't heal after finding a mouse. Is it serious?

Hello, I'm sorry you're having to deal with this issue. This looks like it could be what's called a rodent or indolent ulcer, but something called an eosinophilic plaque is also common. Sometimes steroids are needed other times in antibioticd and sometimes both steroids and antibiotics are needed. If you're not satisfied with your current veterinarian I would consider getting a second opinion or seeking out a cat only practice

I'm so sorry that you are dealing with this with Vivian. The location is a little abnormal for a rodent ulcer, so I would probably recommend more dermatology diagnostics (especially in an 11 year old cat if she hasn't had problems with this before). That may include a skin scraping or cytology of the area or even a biopsy of the area. Sometimes challenging skin problems require a referral to a veterinary dermatologist for a diagnosis. You can find a veterinary dermatologist near you here. https://www.acvd.org/tools/locator/locator.asp?ids=16_Find_Dermatologist If all results still point to a rodent ulcer, there are other medications you can try that will suppress the immune system. I have included more information on feline eosinophilic granuloma complex below. https://www.veterinarypartner.com/Content.plx?P=A&S=0&C=0&A=656 Good luck! I hope that was helpful. Thanks for using PetCoach.

Poor Floquinha, pictures can be very difficult to interpret but it looks like she may have pulled to skin away from the gums. I would recommend a vet check to ensure there is no infection or debris in the wound but at this late stage surgical repair may not be possible with treatment aiming to keep the area clean and allow secondary wound healing.

I am very sorry that Kitty has his sore near her lip. Thank you for proving pictures, it is difficult to know precisely what caused this lesion it may have been a cat scratch, a traumatic puncture from for example a fence, or possible a primary skin like feline acne, or allergic disease. At this stage it appears to be slightly crusted and inflamed and I would suggest a trip to the veterinarian. The vet will most likely clean the wound and debris any necrotic material. The vet may also send home pain relief, anti inflammatory medications and / or antibiotics. The vet will also be able examine the area and reach a diagnosis. Best of luck to you both and thank you for using Petco Pet Education Center, formerly Petcoach.

This looks to be a little sore on the lip that was caused by some sort of puncture wound, scratch, etc. I would monitor it for now and perhaps use a daily water additive or oral rinse that you can get from your local pet store. If it has not resolved or worsened after 7-10 days, then its best to take Arlo to your local vet to get this checked out to make sure there isn't something underneath the skin that got stuck and can't come out (foreign body) that has caused this. Also the vet can do a complete oral exam as well to ensure the gums and mouth look ok. I hope that your fur baby gets this to heal well soon and that it is just a sore. Best wishes and take care! : )

I would get him in as soon as you can, but not necessarily as an emergency. It could probably wait until Monday. There good be an infected tooth, inflammation in the gums, a small ulcer or mass, or something else causing this behavior.

The pictures attached this time! That sore on Bear's lip looks pretty red and sore. I would be concerned that it could possibly be infected. Likely it's hard to get that to heal given he will probably be licking it with his tongue a lot since it will bother him. I would have him seen by a vet. He will need oral antibiotics if there is an infection to help the sore heal correctly. I hope this helps!