We have only about 10 LGD's in service protecting herds of sheep and goats. I have been around such for about 10 years. In most situations dogs kept singly with herd confined on a paddock ranging from one to ten acres. Smallest herd is buck only numbering about 20 individuals with larger herds pushing 100 females and young, females only, or juveniles being finished out. Grazing system is intensive / rotational. Perimeters defined by some combination of woven wire fencing, electrified netting, or high tensile electric with out perimeter being the woven wire. Zero losses realized due to predators for quite some time. Fencing keeps out domestic dogs. Red foxes and even coyotes still hunt small rodents in same paddocks with dogs present but avoid herds.
Protecting chickens is much more difficult than protecting sheep and goats. Your typical LGD's can do it if flock confined within line of sight for dogs and distance cover while reacting is short which is not practical for everyone. Big LGD's with possible exception of Akbash (likely not pure) lack speed I need to control chicken losses to red fox. Raccoon's are easy to beat as they only fight in self defense. Dog just needs to be able to get at them to put them on the run.
Drop the LEGITIMATE talk as it does not apply to poultry, especially with dogs not developed for poultry. The LEGITIMATE talk is often and indication a dog peddler is about and positions taken are a result of vested interest.
@savagedestiny the Maned Wolf (fox) could possibly whip a Corgi but red fox I highly doubt. The dog is slower but heavier. The red fox will not take on a another predator near in size or larger than it is. That is the realm of top predators among canids/
Thank you centarchid for recognizing the fact that a Corgi could work against a fox. I have seen two corgis run a fox off. My biggest fear concerning Corgis and foxes is the foxes out smarting the pair of Corgis. Foxes are smart enough to figure out tricking the dogs into a chase. The second fox will come in to grab and run.
Foxes around here are about the same size weght-wise as a Corgi. The Corgis are lucky because a fox will not put up a fight unless cornered. They will run to avoid a fight.