I have a 3 year old male GSD, one of 4 dogs. He's lovely, what an amazing dog (I'd normally say). But as I'm writing this, pretty much fuming!! He escaped our property for the first time today when he saw our cat (lives separately, could say feral) and ran until he reached the border and got through the stream and hedgerow. Onto the busy road where tractors come by at a heck of a speed. Saw him briefly in neighbours land, and called but to no avail! At this point I started to panic. A couple with their dogs pointed me in his direction, thank God he didn't get hit but also for their help! He came running from far up the road back down but not to me, rather the 2 dogs as he wanted to say hi. Grabbed him and got him back in. He totally ignored my recall, was in a real prey mode which I've never seen to that extent before. Sure, he's chased a few birds and squirrels like any dog. I don't know how I can teach him. He went to so many puppy classes and more as a young adult. I don't trust his recall, don't know how to teach him as he is more or less totally uninterested in training of any kind. Any suggestions? Will I need professional help or is this meaning I just can't let him off lead?