black-footed ferret, ferret, Mustela nigripes
['three-toed sloth, ai, Bradypus tridactylus', 'ski mask', 'mouse, computer mouse', 'Indian cobra, Naja naja', 'nipple', 'racket, racquet', 'koala, koala bear, kangaroo bear, native bear, Phascolarctos cinereus']