Anacondas are iconic giant snakes of South America, placed in the boa family (Boidae) within the genus Eunectes. They are best known for a semi-aquatic lifestyle: many individuals spend long periods in swamps, slow rivers and seasonally flooded plains, where camouflage and patience allow them to amb...
Pit vipers are a major and widely known lineage within the viper family (Viperidae), commonly treated as the subfamily Crotalinae. They are famous for their facial “pits”—heat‑sensing organs between the eye and nostril that detect infrared radiation and allow accurate targeting of warm‑blooded...