Did ancient Romans believe in Vampires or Werewolves?

The ancient Cavemen and Africans and Greeks and Romans and Chinese and Persians and every other ethnic group of people that did and continue to exist on the face of this earth still believes in the existences of vampires and werewolves and demonic sources............ And if you are willing to fight a little red tape, There is a way through the freedom of information act that exist here in America that can tell you what the rest of this world thinks about recent vampire and werewolf and demonic sources current attacks on the human race........