I' m curious as to what you find out ........ a few years back a partner of mine arrowed a buck and we found the arrow - no trace of blood or hair, just a clear substance coating the arrow ....... we found a sporadic blood trail further away, but left the deer overnight as we thought it was a paunch shot - unfortunately rain fell over night (not in the forecast) and washed away the sign - even my old lab couldn' t find the deer for us - we searched a lot ..........