Russells viper (Daboia russelii)

Russell's viper, is a venomous snake in the family Viperidae native to the Indian subcontinent and one of the big four snakes in India. It was described in 1797 by George Shaw and Frederick Polydore Nodder, and named after Patrick Russell, who wrote about it in his 1796 work "An account of Indian serpents, collected on the coast of Coromandel".