12 yards broadside, possible quartering slightly to me. Clean pass through with bright red blood covering the arrow, and bright red blood coming out good on the trail for about 50- 60 yards. All of the sudden the blood stops and can't find any more anywhere. He stopped at on spot and the the pile of blood had bubbles in it. I thought i hit him perfect. The only thing that I know could of happened was a liver hit on the left side and exit out the guts and the guts plugged the hole up. Thanks for the help.