When Rebecca and Andrew are sitting in the city clerk's office, Rebecca is holding Andrew's dog in her lap. As they are walking down the hall after coming out of the office, Andrew is holding the dog's leash folded up in his hand, with no dog in sight. Then, as we switch camera angles, Andrew continues walking with his dog ahead of him on the leash.
At about 25 minutes into the movie, Rebecca and Andrew are standing next to his car, and Andrew is introducing his dog to Rebecca. The dog is seen sitting on the front seat. When the scene changes to a rear shot of the dog, he is now lying down. The scene changes back and forth a couple of times, and the dog's position keeps changing from sitting to lying down..