Continuity mistake: This is actually in a deleted scene on the DVD: Jones shoots a mountain lion at night, and it's seen to be completely dark out. The two other men go out to look at it, but when they're walking across the snow, the sky is suddenly pale blue and there's light just below the horizon. It looks like it's just before dawn or just after sunset. But when they reach the dead mountain lion, the sky is suddenly black again, and it looks like it's the middle of the night.
Continuity mistake: After Lily is rescued, Dot sits next to her and tells her that her hair is a mess. Lily's hair is hanging down in her face, but in the next shot it's suddenly pushed back behind her ears.