I think they swing it around and wack it on the ground to try to knock it out or break it’s neck. They do the same with anything that moves(a couple days ago they grabbed a shiner(baitfish)out of a bucket and ate it, swallowed it whole)It never ceases to amaze me that they don't hold it down with their feet and tear it up...SMH. I know, I know, they just don't do that...but they should, haha!!