For all the years I've bowhunted, and all the deer killed I have had 3 deer that I put down and in the course of skinning, dressing, etc. etc. I found the following:
1. An old bear razorhead stuck in the back of a deers skull (grown over )
2. A muzzy chizel tip burried in behind the shoulder stuck in a rib ( it was completely encased in some sort of white "gristley" stuff
3. In the late arcery season I killed a big doe that had been gun shot in the neck and actually had a healed over hole clean through.
None of them deer even acted funny or anything so I did not know they were wounded till the cleanin.
Having said all that, If your deer is allready on high alert for whatever reason.......dont shoot, either wait for it to calm down or pass all together, it will be back. Bows are slower than an alert deer's senses.
rich