Welcome, I hope you and Dusty have a great future and that he is the first of many good corgis.

Welcome Kelly and Dusty! Sidney is also reactive around big dogs. He'll jump at their heads with a kind a snarly bark, as if to say "back off". He's great with dogs his size and smaller. I try to reward and praise him when he behaves well with others, and other than that we'l just avoid big dogs whenever possible.