Really cool pathological European red fox (Vulpes vulpes crucigera) skull I got today. 

This poor vixen suffered a nasty injury or break to her jaw. Somehow she managed to survive long enough for the bone to heal, although it’s very misshapen. The bone around the injury is extremely dense, and as a result the jaw feels noticeably heavier than a normal fox jaw. This was clearly an old injury as the missing tooth has completely healed over. It must have been very painful and made hunting and even just eating hard, but foxes are tough creatures!