RE: Dark Blood indicates a hit where ?
Hard to tell exactly with that being all to go off of, but Liver would be a best guess. If you go back out to look for him I would try in heavy cover arround water. That sucks[:-] but I would not give up quite yet. If you can still find him you can figgure out where you hit him and sort of piece together how he acted after being shot. You won't be getting any meat off him but mabey learn something that can help you track one in the future, good luck.