Hey, I have a 6 year old Labrador Retriever who has a red sore under his jaw. It appeared about a week ago and I'm not sure if I should go see a vet. Do you guys have an idea what it is or how to cure it? Thanks!
I would have my dog in to see the vet ASAP. It could be something minor but it looks like it could be a mast cell tumor. Mast cell tumors can be malignant and should be evaluated by a needle aspirate before removal. A needle aspirate should not cost too much money (I've been charged between $80-$125 at different vets). It will tell you if the cells are cancerous.
Sometimes when lumps are very small and don't appear to change/grow it is okay to watch them for a bit. But this is quite large, looks potentially malignant, and has not been there for very long. I really would go in as soon as possible.
Honey had a small abscess last year that didn't require draining (and, in fact, similar to your situation, we had a needle aspirate because the vet was certain it was a mast cell tumor - then the cytology reported only inflammatory cells). She had a course of clavamox and it went away. I don't think it was a "full blown" abscess (but may have developed into one without treatment), because real abscesses do generally require draining.
In this case, I would suspect that if it was a larger abscess, the vet would have known what it was on inspection...of course if the antibiotics don't help resolve it, back to the vet!:thumbsup: