Dusty 1983

Station hand Tom Lincoln (Bill Kerr) buys an puppy named Dusty and trains it to herd sheep. The puppy grows to be a loyal dog, but Tom finds out that Dusty is half dingo and has a violent streak. Though Dusty is the best sheep dog around by day, he roams at night and may pose a danger to the livestock of others. When the farmers call for Dusty's extermination, Tom's loyalty is tested, and he must determine how far he is willing to go to keep his dog alive.
A far superior film than Red Dog which is based on this, though it's a child's movie it has more nuance and depth than the later and inferior copy which is meant (presumably) for adults.
Not the best copy and the sound is low, fine on a desktop or anything with half decent speakers but you'll struggle on most tablets to follow dialogue.
If I find a better copy I'll put it up.