Hello, looking for some advice on this lump. The first picture is when it happened , the second picture is current after a night of bleeding because it is on his elbow and he is constantly rubbing it. I’ve noticed this bump for some time, but never worried until one night i noticed lots of blood and something poking out. I’m not sure if that is just inflamed cells or tissue or what, but it really worries me. He wants to lick it , so I have him in an E-Collar, but he still rubs it when he sits and it starts to bleed. I’m not sure whether I should cover it or leave it open? I have put triple antibiotic but I’m not sure hot to help him. Any advice or opinions wanted.