i have watched these dogs work during trips to North Wales (mine, not the dogs'); in N. Wales, i believe the dogs are border collies (medium length black and wh

i have watched these dogs work during trips to North Wales (mine, not the dogs'); in N. Wales, i believe the dogs are border collies (medium length black and white, ~ 10 - 20 kg). A few things in particular i was amazed by--first, the speed at which they are able to gather a previously grazing herd of sheep scattered over a a few hundred sq metres and get them moving briskly to some intended destination in well-ordered moving queue; second, each "team" (3-4 dogs) appeared to work in a tightly coordinated way; and also, i often saw a puppy as part of these teams, which suggested to me sheepdog skills are at least substantially learned from the older dogs.