I went for a walk a few weeks ago on the disused train line, I noticed some Soay? sheep, only 4, my dogs were not even remotly interested but I called them and put them on the lead and went to the gate and ALL 4 ran up to the gate for a treat or somethng, they were so sweet...I walked off before our dogs even saw they were on the way to see me.....I would not trust any dog but especialy in a pack......up to now I have never seen our dogs interested and do aviod sheep areas....thats why the train line is out unless I know there is no live stock......my dog trainer has a big tup that he will let you take dogs in with if you have a problem...I have not done that yet..may do on my next visit!!