Can we nip this in the bud? And, if so, how?
Brief history. He's a male Border Terrier, 10 months old. We got him as a pup. We live on a farm. He spends his days both in and outside. We have a very large garden which he has the run off. It is fenced but with sheep wire which he can get through into the fields. It is impracticable to fence our property all the way around with a 6' high, solid fence.
We haven't had any problems until now. The farmer next door, whose fields back directly onto our garden has had older store lambs through the later summer and autumn. Pup didn't worry them at all. He would spend time in their field, join next door farmer and his Lab at feeding and stand eating sheep meal out of the troughs alongside the lambs! He's crazy!
Fast forward to last week, and I heard that he had herded my own ewes and young lambs into a corner of their field. Our fields are further along the road. I didn't believe the man who told me as he is inclined to exaggeration. However, this afternoon I caught the pup in action, chasing our close to lambing ewes. He came to me immediately I called him off.
If he was chasing any other man's ewes, that man will likely shoot him. Clearly I don't want that. For now he is confined to house and will be walked on the lead but that isn't a long term solution.
Is there any hope for us? Any advice appreciated. Incidentally, where we live I haven't a hope in of a dog behaviouralist - the closest is 60 miles away. Thanks!