Hi, I have a 2.5 year old Aussie/border collie/Bernese mix ( I think). He has been socialized a ton and 90% well behaved and awesome! In the last few months he has started being reactive on a leash to other dogs and if a dog is submissive he gets even more barky. ( most of his exercise is off leash) I am trying distractions with heal and with treats sometimes it works unless I am to late getting the treats. It starts as an excited bark but obviously can wind up the other dogs and mine Gibson as well. My goal is to be able to walk by another dog with out getting wound up??? Do you think it’s a bit of an age thing? Like checking out his dominance? He never really barked till after he turned 2? Thanks in advance Jamie