Why the hell did...... -SPOILERS-
The scientist woman start waving and screaming at the sabretooth at the end of the movie (right before she gets killed). She just yells at it to go away while it's walking towards her.
Shouldn't she have known that waving at a dangerous animal will provoke it, especially if she'd already seen people die? Woooooow.
"Visits? Why, that would indicate visitors!"
~~ Plan 9 From Outer Space