I have huskies who as a breed are infamous for their lousy recall! Several of my dogs would vanish into the tundra if they had the opportunity. When one of those dogs escapes, which is rare (Knocking on wood), I have found one very effective way to get them back. I get in their line of sight or as close as I can, then I throw myself on the ground, screeching like I am being killed. Anyone around thinks I've lost my mind, but almost always, the dog comes back to see what I am doing.