On our walks, besides having trouble learning that car tires are an inappropriate place to pee, Indy gets distracted by other dogs. The other day when I was walking him, he got all worked up when someone was walking their dog going the other way on our street. He pounced and jumped at him as we passed, and even resorted to walking backwards to see it. He was so preoccupied he didn't see the parked car...*WHAM* He broadsided it. His whole body made full contact with the bumper. And then he jumped back like "where did that come from?"