Continuity mistake: He cuts a hole in her pants for insemination. When in the car moments before fighting the dog there is no hole.
Continuity mistake: Towards the end of the film when the dog has jumped onto the car to attack Rocky, the red bag filled with money vanishes from the outside of the car, only to reappear shortly afterwards.
Continuity mistake: When the dog is trying to get to Rocky in the car, she first gets in the driver's door. Watch the window on the door. Its dirty before the dog even jumps up on it. When she gets in, the window is instantly clean. It becomes dirty again.
Continuity mistake: When the blind man drops the turkey baster, it's a lot fuller than when he started.
Chosen answer: As we see in the film, the houses they burgle have all purchased security systems from Alex's father. This makes it easy for them to gain access to the houses without triggering the alarm. However, if they committed a string of burglaries in which no alarms were triggered, people would eventually put together that customers of the same home security company were being burglarized and would point to them all being inside jobs. By tripping the alarm once they finish, they make it look like a standard break-in.
Phaneron ★