He's really cool with other dogs, until they are within reach, then he grabs them and shakes them, he's accidentally had a couple locally, he definitely means harm when he's got hold of them!
If another dog challenges him, he goes mental, there are plenty who've seen and heard him hit the end of his chain at shows when one minute he is asleep under my Land Rover ... The next he is bouncing on the chain, not great for business!
When we are out walking, if we see another dog, he goes down into a funny stalking stance or lies down completely, then lunges at them as they pass, luckily it