I have been taking our pup for walks (on the lead) while I do my field inspections, should I keep him away all together and if so till when? The Shetlands are ok, bit inquisitive, but respectful. The GfD's, less so but I pick him up or move away before he gets threatened by them (they are very good at headbutting). Trying to get a balance where he knows what a sheep is and is interested but not getting frightened or over keen/aggressive.