US // UK
I'm torn this week: I really like both covers. When I first saw the UK one, I wasn't keen, but it's grown on me. I think the red and black is very striking, and it uses the Zephyr font used for The Twilight Saga. Instant win in my opinion!
The US cover image is also eye-catching, and there's no way I'd walk past it in a shop. I'm not sure that either of them really scream werewolf though, at least not to me anyway. (Is that just me? Would you see these and automatically think "Ah yes, werewolves"?)
Do you have a preference?