Croc (2007)

Continuity mistake: When Andy Konsong discovers his brother's mutilated body in the bloody swimming pool, he vomits, then tries calling for help on his cellphone. As he makes his call, the gigantic crocodile lunges out of the pool and bites off Andy's arm, cellphone and all, above the elbow. Andy screams, staggers and lands on his back, but his only injury thus far is his severed right arm. His mouth is not bloody at all, nor should it be. The camera cuts to another angle as the crocodile lunges a second time; but, before it even enters the frame and bites into his legs, Andy's mouth is suddenly full of blood, his teeth are bloody, and blood is streaming down his chin, even though he has suffered no abdominal injuries.

Charles Austin Miller