1. perro dogo   porcupine   ox   bulldog   octopus   Hint Half-n-half Clue   2. nutria   whale   otter   bison   mare   Half-n-half Clue   3. chita, leopardo    penguin   sea lion   dolphin   cheetah   Half-n-half Clue   4. panda   seal   penguin   bat   panda   Half-n-half Clue   5. canguro   seal   kangaroo   hare   hippopotamus   Half-n-half Clue   6. gorila   kangaroo   gorilla   chimpanzee   seal   Half-n-half Clue   7. buey   walrus   penguin   ox   gorilla   Half-n-half Clue