For me the thought of the fox has always been a comfort. She looks out for number one... and yet takes such good care of her puppies, carrying them out into the sunshine outside the den for no other reason than that sunshine feels good. She'll eat anything and trick anyone. Her den has several entries (up to five, I've heard) so that she'll never be trapped but always find an escape. In short, she's a survivor. So I'd go for something 'foxy', like The Den or something a bit more inspired, perhaps, but with the fox in mind.
Good luck with your project!