I've been meaning to post this for a while to see if anybody else has seen this sort of thing. I shot a big whitetailed doe a few weeks ago. My shot was, admittedly, not that great. A little over 200yds and I didn't have the greatest rest, but I hit her in the spine, which certainly works, but I never shoot for the spine because it tears up the back strap. Anyway, when hunting, I always carry one or two freezer bags with me to put the tenderloin in. I field dressed her, cut out one tender loin which oddly was twitching as I did. I figured it would stop once removed from the inside of the rib cage, but it didn't. I was standing there holding it while it twitched in my hand, almost enough to be creepy. I looked into the body cavity and saw that the other tender loin was also twitching. I put the first one into a zip-lock freezer bag and it twitched enough to actually make a little noise rustling the plastic. I cut out the other tender loin and it did the same thing, twitched around in my hand.
It was very strange. I kept expecting the doe to jump up and try to eat my brain or something. I was tempted to sit around and see how long the tender loins would keep moving on their own, but night was falling and I had a long way to drag my deer. Anyway, ever see that or anything like it? I've shot a ton of WT deer in my life and never seen something like that. As I indicated before, I try to avoid the spine, but it occurred to me that maybe the muscles were doing that because of trauma to the spine. Got me.