I know one time my dad shot this Bull moose in just one lung (hit a rib and bounced into the lung then down into the guts)and we seen him drop about 100yds from where he shot him. So we gave him 15 mins as we walked over to him he got back up and took of into this thick brush. He was leaving lots of blood behind then suddenly the blood stopped and we looked for hours then finally crows started circling an area about a mile from where we were so we investigated and sure enough there he was. Its amazing what animals can do when they get that adrenaline pumping.