The ancient Aztec civilization of Mexico believe in vampire sorcerers called Nanahualtin (plural) or magicians.
The Naualii (New-wa-lee) was a human who could cause people to go insane and practiced vampire activities by smothering children then drinking their blood.
Nanahualtin could shape-shift into an array of animals, their favorites were Were-coyotes and Werewolves.
Mari Wells 