A goat expert will be along soon, no doubt, plums - meanwhile, if it were sheep you were talking about I would be suggesting you check any dogs which can poo where the sheep graze. Our vet recommends worming any such dogs every 3 months. Sheep can tolerate a tapeworm burden but they can cause cysts, some of which could cause symptoms and some of which, in fat lambs, could cause meat to be condemned.