Continuity mistake: When Penny and Bolt are doing their show at the beginning, Penny is on her scooter when she tells Bolt to "speak" and also when the shot comes up when the camera is right in front of Bolt's face(right before the superbark). But when cam 5 comes up where the man is talking to Mindy Parker about Bolt the scooter is laying on the ground and Penny is not on it.
Continuity mistake: Penny takes a photo of herself with Bolt after Bolt has 'rescued' her again at the very beginning with a Polaroid camera. She places it (the camera) on a counter next to the trailer's door and it is parallel to the edge. Later, after the two cats have taunted Bolt and the camera pans down, the camera has moved and is now positioned at an angle on the counter.