Doctor von Niemann
A certain species, yes. There are vampire bats. Doctor William Jameson, who explored many of the tributaries of the upper Amazon, states that bloodsucking bats do exist. He further asserts the victims often become blood drinkers themselves, citing a case in which he saw a native tortured to death on an ant hill by his tribe brothers. They swore he had become a human bat. And, states Jameson, he confessed it.
