Things I learned from watching Crawl....
1. If you stand still in the water, a alligator will just swim right by you, no matter if you're covered in blood.
2. Just remembering your days on the swim team makes it possible to out swim a alligator.
3. Pulling your leg from the grasp of an alligator is pretty easy, hell it'll hardly even bleed.
4. Alligators run in large packs when the story requires it, then it's back to only one.