I am so angry at this dog and need help to figure what to do. We have had Border Collies over the years but this is a new problem. Male (unneutered) 3 years old and he was just fine until a couple months ago when he started taking off for parts unknown and not returning for a couple days. Ok, I know he probably went off to find a girlfriend and we will nueter him very soon, but I have a feeling that won't stop him. He used to be interested in the cattle but now all he can think about is running away. The minute we let him out of the fence he runs like crazy and doesn't stop. He is a sweet, gentle dog, great with kids and we have had him since a puppy. We live in country on a large farm and neighbors aren't very close. Will a boundary shock collar work?or any other suggestions would be great. We have had many intact male dogs that never left our farm, never had a problem like this before.