1. urso polar   porcupine   mare   cheetah   polar bear   Hint Half-n-half Clue   2. golfinho   hare   dolphin   cheetah   bat   Half-n-half Clue   3. lontra   otter   porcupine   rhinoceros   kangaroo   Half-n-half Clue   4. ouriço   hedgehog   seal   shark   koala   Half-n-half Clue   5. boi   kangaroo   toad   ox   otter   Half-n-half Clue   6. hipopótamo   hippopotamus   penguin   cheetah   hare   Half-n-half Clue   7. pinguim   antelope   bulldog   hedgehog   penguin   Half-n-half Clue