My dog had a red pimple looking nodule on his jaw near his mouth - it was a benign tumor. Our vet removed it. There are other growths it could be too that are not benign - I would see a vet.
My other dog when he was younger used to chew a tennis ball for hours and he actually developed pimples, like acne, on his chin and beside his mouth. These had pus in them and would go away if we took the ball away and washed his face everyday.
My other dog when he was younger used to chew a tennis ball for hours and he actually developed pimples, like acne, on his chin and beside his mouth. These had pus in them and would go away if we took the ball away and washed his face everyday.