We went out this morning to find one of our chickens completely missing, and the other 3 dead in their fenced in area. The 3 left were not missing any parts or other wounds, only fang marks in their necks. We can't figure out what would have killed all 4 grown chickens, and only taken off with 1. There are feathers in the coop and run, but the birds seemed fully intact and ok besides the neck bites. Any ideas? We're in Dallas TX. My thoughts are a raccoon or bobcat, but I can't imagine a bobcat killing the other birds for the sake of killing them. I'm going to run and grab a game cam to see if the predator returns tonight for its remaining kills.