Continuity: The amount of blood on Sam's face once he's been attacked by werewolf Ginger changes around three times between shots.

Continuity: Towards the end of the film the amount of monkshood inside Brigette's needle changes several times.

Continuity: When "B" accidentally pulls the leg off of the dead dog, the position of it in her hands changes between cuts.

Continuity: Near the end Bridget blocks Ginger in the toilet by propping a plank of wood under the door handle so the door cannot open outward. Earlier, when Ginger was trying to cut off her tail, the door opened inward.

Continuity: When Ginger and Bee are buying tampons, Ginger takes the box from Bee twice without once giving it back.

Other: When the mother, Pamela Fitzgerald, opens the freezer to put in the meat, she is distracted by Bridgette. In the freezer, we see the corpse of Trish. Look at Trish's eyes when we first see her; they seem to widen while Pamela is holding a pack of meat above her.

Other: Sam loses an awful lot of blood for someone who manages to stay alive and conscious. Bridgitte takes a couple of minutes, and follows a pretty thick trail of blood to find him, even though he should have passed out from either pain or blood loss by then.