This morning, I shot a doe in the vitals from 10yds - the arrow passed completely thru the deer, yet I found not one drop of blood. I shoot Thunderhead 100 brodheads with a Matthews Ovation compound bow set at 65lbs. The deer took off like a house afire and I watched her run (tail down) for approximately 100yds until she disappeared in the woods behind me. After 30 minutes of waiting, I got down to look for my arrow which I found about 20 feet from where she had been hit. Much to my amazement, there was very little blood on the arrow, but it was visible all the way thru the feathers, which were matted with red blood. Not one drop of blood was to be found on the leaves around the arrow, so I started a circular search for blood traces and found nothing. I cannot believe this deer didn't die shortly after being hit as well as she had been, yet not a trace as of now. I am going back out into the woods and resuming my search shortly. Another hunter in the area said he had seen 2 deer running thru behind him in the general area where my deer disappeared and around the same time, but he said neither deer looked in any way injured. Both were does he thought, but he had no shot as they were moving too fast. I don't give up easily, but am at a loss as to where to go from here. Any advice as to what happened?