Anatolian Leopard Whiskers are the first ingredient Amy and Dan Cahill found on their quest to put together The Serum Antidote. They can be found in Ancient Troy .
Amy was feverish when the whiskers were obtained. She was hallucinating and believes that a leopard gave her the whiskers. She finds a footprint where she believes she saw the leopard. We know that these whiskers are stolen from the museum Dan Jonah and Atticus visited, The Museum Of Historical And Ancient Curiosities.