1. Russell’s viper (Daboia russelii)
LD50: 0.03
Apart from being the most venomous of 11 most poisonous snakes in India, this snake is also one of the deadliest snakes in southern Asia. It is also one of the famous snake from the “Big four” group, for it is one of the snakes that inflict deadly bites in humans. It is present throughout the whole continental India apart from islands and Himalayan outskirts. Russel’s viper inhabits a wide range of ecosystems, forests, wetlands, grasslands. It is a recognizable nasty looking snake, with long (of 3,3 feet average length) thick body and keeled scales. The coloration varies from brownish hues to red-orange to gray, but the common feature is that its patterns and color faint with the snake’s age. If feeling threatened, this snake can be very aggressive and attacks by coiling the body and hissing loudly.