6. Russell's viper

It's hard to get accurate estimates, as many people who are bitten by snakes live in regions with poor medical care and never report their encounters with the deadly reptiles. But around 58,000 deaths in India are attributed to snake bites every year, and the Russell's viper (Daboia russelii) is responsible for the majority of these mortalities, according to research published March 25, 2021, in the journal PLOS Neglected Tropical Diseases. This species is considered one of the most deadly of the true vipers, researchers reported in 2021 in the journal Toxins.