Despite being a vampire, Castiel was an absolute sucker for dogs.

Until recently, he had a large, mangy, dog follow him into his abandoned manor house. The dog was a good boy, always listening to Castiel’s soft murmurs in the dead of night and even moving out of the way when Castiel walked.

Castiel was wiping dust from the shelves as moonlight peered into the bedroom. He turned around, and found his ‘dog’ was now a full grown man.

Or, what Castiel thought was a dog, was actually a werewolf.