Other mistake: When the bear falls on Eddie, they are facing the same direction, but Eddie says that he knows the bear is a girl "Because its vagina is on my ear."
Continuity mistake: The blood spray pattern on the Park Ranger's face changes after she shoots the guy and the scene progresses.
Bob: Apex predator... high on cocaine... and you're going towards it?
Trivia: Although the film was set in Tennessee, it was mostly shot in Ireland. The real forest seen in the movie is in northern Georgia in the Blue Ridge Mountains.