RE: Help Trapping a "Fisher cat"
Sounds like a fisher cat to me. They are one of the nastiest varmints to deal with. If there is not closed season, I would forget the traps and hunt the little bugger. If you need to trap, I would put a leghold trap around any entrance to your pens, or better yet, create an entrance for him to go into and load it with leg holds. You will not get rid of this animal until you kill him or he kills all of your livestock.