the jaws

Question
My boxer has really low hanging jaws and recently one side off them has swolen and is hanging twice as much as normal almost looks inside out now and there is some brown oozing skin there now too feels a little hard to the touch! I have another boxer and i didnt know if maybe it could be caused by to rough of playing or could it be more serious?

Answer
Some dogs will get inflammation in their lips from food being caught or from allergies.  Check the lip and see if there is a fold that is hiding some food.  Wash it out with peroxide.  If there is a swelling and no odor, then that mey need some steroid creme of a shot to take the a swelling out.