he looks pretty well fed and taken care of.. I wonder if he got out of a yard to run after a girl and then... voila! Poor dude. We had a Boxer come in at one point. His penis was also necrotic looking (some really dark areas), but he recovered just fine. Took about 3 - 4 weeks to look all normal again. We actually thought we'd potentially do some debridement as well... but no need. Resilient thing, the penis is.