Your housing must be mink/raccoon/weasel/rat/ etc. proof, or the "Diner" will be back for breakfast, lunch and other dinners, "free" is good for predators.
If a large kill at one time, mink will do that, also raccoon, if you have them around. Bobcats just take one at a time-take it away-raccoon may kill everything that moves and usually take one to eat. Skunks, also, just take one at a time, but all predators come back if not locked out completely. This means doors, popholes, cracks that can be enlarged, under floors, through wire that can be stretched or chewed. Over fences, in through windows not shut tightly--not a funny thing. I am sorry for any losses to predators (hawks,daytimes, owls at night). It is up to us to outsmart them and keep our birds safe. Don't turn your back--they are good at what they do!
Good luck, CJR
Won't bother your horses, unless it's a cougar (unlikely, and like Bobcats, they only take one at a time), but your neighbors better beware--and safely secure their chickens--you have had a red alert--for varmints it is hunting season!!