So has anyone experienced their Shepherd randomly start growing and barking for no reason? For example today, we fed him and gave him his food and went off. He gets very aggressive looking but I really don't think he will bite or anything. Also for example, at random times if you just approach him to pet him, he will go. I'd say 9 times out of 10 he's just fine, and loves it. But occasionally he goes off and it's pretty scary. We always ignore him when he does it and we try not to show fear. We've heard from internet sources and trainers that "fixing" him may help because it just has so much testosterone in him that's setting him off and making him unstable. Anyone have any ideas about this? He is about 1.5 years old.