I guess the dogs here are different. They're almost all inside fenced property, but they always run with me whenever I ride by. I've had a few chase me. Last week I had a GS chase me, didn't make a sound at first. Didn't even know he was there until I heard a snarl and saw him not two feet from my back tire. I immediately stood up on the pedals and looked at him. The tall presence made him back off. But it scared me that he got that close before I even knew he was there.