I use hunrdes of years tried n true in usa lgds, not though huge slow foreign ones made only to guard large stick from large preds head on, n not fast enough to fight off or catch American small preds. Though anatoilian shepherds are great as well. gsd, rough collie/scottish shepherd etc names for old time "lassie" collie dogs.
neighbor set up feeders and houses for coons for fifty years but suddenly stopped feeding when pyraneese tore down fences to get at feeders and almost killed her two pet dogs. Guess were at least forty paifs of eyes showed up nights later??? At my fences of garden n chicken yard and pond of fish. luckily those butter balls were way too fat to climb my short fence or get through wire, so they just gnawed through goat fencing and were trying to pry way in anywhere there maybe feed for them. one pried open corner of old camper door n came right in, n getting hit with stick end of broom only made him chitter. So kicked him out literally and he just kelt waddling back for more. looked over at a rescued fiest seding him foaming at mouth going nuts at end of chainand them staying well away from him. so i went n turned him loose on them n he killed almost or about eighteen. dog was like a chainsaw with legs! Read up on breed n asked smart ol timers around here (east tn mountains), n they all said fiest bred from crossing in coyote into beagle, make a stronger fiercer hunter/better tracker. i believe as that lil dog has teeth like a doberman, and knows how to use them and has a real atitude, and once every six months he will challenge whoever. and other dogs. he may get one or two good snaps in but usually not even that, and i joke he could fight his way outta a wet paper bag.bag. odd he is so good at killing coons possoms n other small vermin, n can't be left with cats that cannot get up high or he will tear them to shreads. Id definitely recommend smaller shepherd n collie breeds as easily obedient trained and bond to stock small or larger, stay close mostly, love children n women (don't joke about beatn either around a collie or ithey'll take on even a large man, or a couple bears even if thry get around small children).