A quote from the article" "As for the F-36’s name, kingsnakes are North American snakes that live up to 30 years, which bodes well for the F-36’s service life. Kingsnakes are so named because they have a habit of eating other snakes—a fitting moniker for a fighter designed to replace the Viper." Also Kingsnakes are also immune to most if not all other venoms from other snakes !!!