Revealing mistake: After Dooley and Jerry Lee were shot at and the window was blown out in Dooley's Mustang, they give chase to the Mercedes, look carefully at the "dog". In two shots in the chase sequence, you can see it is a fake dog and looks very much like the fake dog in the bar scene lunge. (00:56:30)
Revealing mistake: In the bar scene when we first see Jerry-Lee in action so to say, he attacks a man with a red checked shirt on. If you look at his arm it is clear there is protective padding underneath where Jerry-Lee bites him.
