I use the walky dog with Allie. I tried to teach her to run next to the bike and pay attention to it but she kept coming in towards the bike. Lloyd does great with me just holding his leash though. He stays in position and keeps an eye on where they bike is. The walky dog attachment keeps Allie so she can't run into the bike. I still trained her by walking the bike and holding her leash to teach her not to run after things when with the bike.