My wife let the dogs out before bed one night last month. We were having a warm spell, so there were more small critters moving than normal for a December night. The next thing I know, I hear her yelling my name and cursing first my bird dog (GSP), and then the little rug rats, then my dog again, then me, .... I get to the door and see that my GSP had found a opossum in the yard and brought it up to the front porch for us. The little ankle bitters were in a tizzy over it, not sure if they should attack it or run away. Mean while, my dog sat there on the porch looking at me like "what did I do wrong dad?" I let everyone back in the house, but I left the front door open (screen door was shut). It wasn't bloody anywhere, so I was assuming she hadn't given it a good crunch when she picked it up. I stood by the door and watched it for a bit. After a few minutes it slowly raised it head to look around. Upon seeing me in the door way, it reversed its motion and "went back to sleep". I couldn't help but chuckle. I went back in the house and gave it 15 min to move on, but it remained put. I grabbed the snow shovel off the back porch and rolled it down onto the sidewalk, and then went back in and went to bed.
Coons and groundhogs get shot on site at my place. I used to eliminate the opossums too until I found out they eat a boat load of ticks. After that, I started letting them go. The neighbor has enough old groundhog dens under his barn and mini barn that the opossums don't end up doing any additional damage so there's no reason for me to dispatch them.