I've encountered, time and time again, when dying or killing the physics goes haywire for a minute or two.
Example. I killed a compy on a fresh startover the other day. The last blow with the hatchet sent the dino flying. It appeared to have bounced between a couple of boulders, then landed back at my feet. When attempting to harvest the meat/hide, it did the same thing.
I've seen this with the tails of my kills as well. Where the tail seems to go on forever.