Agkistrodon piscivorus (VENOMOUS)
Cottonmouths are the only semi-aquatic pit vipers in the United States and because of how many lakes and swamps are in Florida, this snake is one of the most frequently encountered species. Admittedly, they are not commonly encountered in our neighborhood, but the surrounding lakes and ponds with fish and frogs do offer suitable habitat for them. They have irregular banding that can be reddish, brown, tan, or black in coloration. Because of the similar habitat and appearance to Florida Watersnakes, these two species are often confused. If you encounter one, it is best to play it safe and simply leave it alone.