Dumb dog

Is this not the saddest face you have ever seen in your life!? My heart is breaking as we speak. So I have no idea how but Knox always has some type of injury. One day I came home and he had a gash above his eye. This particular day I let him in from outside and there is a huge bloddy cut on his snout. Its been there forever and every time it heals up he will scratch him self and rip the scab right off! He also has scabs on his head from scratching so hard. What a dummy....I dont even know what to do with him. You would think he was a fighting dog like a pit bull or something....with wounds all over, but the reality is he is sleeping on our bed in this picture. He is very pampered believe it or not.