Snake: Giant anaconda

Referenced in pop culture from hip-hop songs to action movies, this jungle-dwelling snake can weigh in at around 550 pounds. Found in swampy regions of South America, and commonly known as the green anaconda, this creature not only possesses the ability to swim, but is in fact more agile in the water than on land. The mega-snake kills its prey with asphyxiation, and is known to maintain its size by dining on large animals such as pigs and deer.