black-footed ferret, ferret, Mustela nigripes
['Border terrier', 'American Staffordshire terrier, Staffordshire terrier, American pit bull terrier, pit bull terrier', 'borzoi, Russian wolfhound', 'Scottish deerhound, deerhound', 'chainlink fence', 'cougar, puma, catamount, mountain lion, painter, panther, Felis concolor', 'mouse, computer mouse']