The nonvenomous king ratsnake eats deadly cobras and vipers; scientists have now mapped its genome to investigate how it survives their venom

• King ratsnake is known for hunting and eating deadly venomous snakes (Inaturalist photos)A nonvenomous snake that regularly hunts and eats some of the world's most dangerous venomous snakes has given scientists a new mystery to solve.
• Researchers have now mapped the genome of the king ratsnake to understand how it survives the venom of cobras, kraits and vipers.
• The king ratsnake (Elaphe carinata) is found across East Asia.