Welcome to the world of bulldogs! Fear can be their middle name! Bogey is afraid of many different things, sometime without any rhyme or reason! He is afraid of ONE of my kitchen chairs- they are identical, but one of them causes him to cower and sneak by it every time he enters the kitchen! Aluminum foil coming out of the pantry will send him racing at high speed to the other side of the house. If my neighbors have company and a new car is in the driveway, he sits and growls at it. If they put their trash bin in a different place, he is totally freaked. He does not mind thunder or fireworks, but the sound of me opening a trash bag sends him in a scary frenzy. He hates the vacuum, but will sit in front of the leaf blower with not even a thought of running. Basically, I ignore the behavior and go on about my business near the object that has him scared. He eventually comes around. Just don't go overboard reassuring him- that sometimes causes more anxiety. Act like its no big deal, and he will catch on!