Water Moccasin
Venom of the Water Moccasin destroys any and all blood cells, which leads to a reduction in clotting of the blood, and finally causes hemorrhage of body parts. Moreover, they enjoy holding their creepy (in my opinion) head at a 45¼ angle.
Green Anaconda
Just when you thought it couldn’t get any worse, huh? We get to the Green Anaconda, which contains the capability of growing as long as a city bus(!) and can get to the weight of two grown men.