Plot hole: At the start of the movie, a great deal is made of the boom mic that enters the shot. This is ridiculous, because Bolt's view would not be restricted to what was onscreen, he'd have a perfect view of the person holding the boom mic (as evidenced by it not being stable). There's no possibility of him not seeing the person holding the mic either. As Bolt completely and utterly believes the world he lives in, and thinks the situations he finds himself in (saving Penny) are real, someone holding a boom mic would break the illusion for him. In ALL instances in the movie where an outside force (i.e. Dog handler) interacts with him, Bolt never gets to see the person handling him (handler approaches from behind), the boom mic operator however is literally right in front of him.
Deliberate mistake: When Penny is loaded onto the ambulance at the end, her gurney is rolled straight in. This is wrong, the paramedics will collapse the wheels and slide the gurney into locks to hold it still during the drive. It was done this way since Mittens and Rhino were hiding in the collapsible section.
Add timeGrumpy Scot
Deliberate mistake: When the song comes on showing the three travelling across the U.S. on the map, it has them in the bed of the dumptruck, on top of a dirt pile going across 3 states. A dumptruck wouldn't be travelling that far with a load of dirt that can be gotten in any state.
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.