Plot hole: Spoiler: At the end of the film we learn that the girl is the wild animal, having been saved by the same doctor. Yet at the restaurant she is wearing a bare back dress and does not have the giant X-like scar on her back, like he has or the model has, who the doctor marries at the end.
Continuity mistake: When Marvin's car is falling over the cliff after the encounter with the seal, about half way down the hill you can see the front hood of the car come cleanly off and away from the car, but in the next scene it is still on the car.
Factual error: When Rob catches the Colombian guy with the drugs, the police officer tastes the drugs. In real life, a police officer would never taste drugs, because it could be something else, such as cyanide.
Continuity mistake: When Rob Schneider's car first flies off the cliff, it eventually comes to a halt, before falling down some more. In the first halt scene, there is a huge target shaped crack in the window. In the next shot (one of the car falling down backwards) the crack is gone.
Visible crew/equipment: At the start of the film when Rob goes for his morning jog you can see a pad behind his left shoulder where he is supposed to get attacked by the dog.