When Ronnie drives up to the Smith mansion with his dog, the dog can be seen about to follow him out of the car. Ronnie calls the dog, and we see the dog sitting in the back seat as if he hadn't budged and then walking toward him.
At the beginning of the film as the young Bill and Dr. Horton are rushing up to the house, a clear, moving shadow of the boom microphone can be seen following them on the hedges on either side of the walkway.