Urban legand or Gaurdian Dog?

Some time back I was having problems with what I thought was the neighbours dogs getting in with my sheep. One time Kyle raced out there the chase it off. I was on the deck watching through binoculars. The sheep were certainly not running away like it was a dog. They would run for a second and then turn around and look at what ever was following them. What I saw looked like a small dog maybe Carin Terrier size and color or a pig size. I thought to my self oh great our totally useless Meat Head Team Roper of a neighbour got another dog. Just what he needs. The three he already has jump out of the ditch in front of your vehicle as you are passing his house. About scares the bejesus out of you. By the time Kyle gets out to the sheep it is gone.

Early in September I got a call from the good neighbour saying our pig must have got out and it was chasing the cows. Funny I said we don't have a pig. Thinking back to two months earlier I remembered the little dog chasing my sheep. I asked Ken if he was sure it wasn't a Terrier type dog. "NO NO It's a pig" Then I said Meat Head must be collecting pigs now. Poor Ken that was the last thing he needed to hear. You see Ken and Meat Head share a fence line and are mortal enemies.
This week Jerry and I headed out to the back pasture to sort out some fresh sheep. I sent Isla out to bring the sheep. Jerry says " What the heck is that. A dog." It was chasing Isla on her outrun. It was on the other side of the fence. I called Isla off and we jumped in the Ranger to go and chase the Dog! off. We found this!

Meet my new Guardian Dog! He is mostly a parameter kind of working dog.
As we walked up to the fence he was happily waggin his tail. Still not sure who he belongs to. I refuse the phone Meat Head and ask him if the pig belongs to him. I was totally ready to keep him as a pet and Jerry was totally ready to cook him for supper.

Here he is working the parameter.