My dog a boxer and he has one swollen round bump on his stomach and it wasn't there yesterday and it's not red and he eat well no dieherria and no vomiting. He's not licking it or anything and it's on the bottom of his rib cage close to his stomach I would just like know what it might be. Pet's info: Dog | Boxer | Male | neutered | 2 years and 11 months old | 85 lbs

Hello If possible a photograph of this lump would be helpful. It could be a lipoma (a harmless fatty tumor) but Boxers are known for developing mast cell tumors on their skin. Those types of tumors need to be removed as they can cause issues with the GI tract and even anaphylactic reactions.

If the bump still there in a day or two I recommend getting Toby checked. It may just be a hypersensitivity to a big bite if it happened suddenly and goes away. But it it doesn't Boxers are prone to several types of tumors in the skin and anything that grows or appears quickly should be evaluated.

Poor Brax. This looks more like a mass than a true "sore". Since this is a new finding, I would strongly recommend have it checked out by your vet. Your vet should be able to aspirate it and make sure there aren't any scary cells present. Boxers commonly get tumors called mast cell tumors which are malignant but can be curative if diagnosed early and surgically removed. Your vet should be able to easily rule this in/out and recommend the best treatment for him whether than is to surgically remove it or to just watch it. I hope this helps!