Most girls I know are on the fence about fur ankle boots as they sometimes look a little, er, lady of the night. But I think they can look the right side of sexy as long as you wear them with dark masculine clothes; head-to-toe all black, paired with skinny leather trousers or a short, smart tailored dress with black opaque tights.
These black leather Emma Boots by ASH are one of my favourite pairs I've seen (it seems like ASH is my favourite footwear brand at the moment), with multi buckle straps detail, platform heel, leather upper and fur trim.