I assume ferrets are in the weasel family since they are mentioned in the film; my sister has a white ferret named Kalinka .. she has free run of the downstairs guest bedroom during the day but has a large cage for sleeping at night. She is amazingly smart and cunning. Once I took care of her when my sister went away for a week and she hid so well it took me 24 hours to find her!! She was sound asleep among a box of stuffed animals in the closet... she wiggled under the door to get in there..