Rargal Thrallmaster tends to the various Vampire Cattle found in Castle Volkihar. He reveals that he captures them from all over Skyrim and tries to keep a wide selection for every taste. He warns the Dragonborn not to kill any, or else there will be consequences.
"You're new here, so I'll explain this once. You feed from the thralls as much as you like. You kill them, and I'll split you in half."
- Where do the thralls come from? "All over Skyrim. It's my job to collect them. I try and keep something for everyone. For every taste, I mean. Sometimes you get one who comes willingly, but most have to be convinced to join us here."
- "You're welcome here, as long as you don't overfeed on the thralls."
- "Without the royal blood flowing through you, you're one step away from the rest of the thralls. You disrespect Lord Harkon by walking around here like that. Go see him at once, else you might find yourself in a cage." —If cured of Vampirism.