29. Not-So-Common Common Sense?
They say Florida is the Australia of the United States. Alligators, crocodiles, both are vicious creatures who are straight up monsters of the water. Their existence goes all the way back to the time of dinosaurs and they are incredibly well-honed predators.

If there were any animals we should be particularly afraid of, it’s probably snakes, bears, and crocodiles, oh my. Really, watch out for them. And heed the signs. Australians have a reputation for daring, and if even they aren’t going to risk going into croc-infested waters, we probably shouldn’t either.