1. tricheco   mare   koala   walrus   lioness   Hint Half-n-half Clue   2. polpo   penguin   octopus   beaver   rhinoceros   Half-n-half Clue   3. porcospino   bat   cheetah   kangaroo   porcupine   Half-n-half Clue   4. bulldog   seal   panda   gorilla   bulldog   Half-n-half Clue   5. lontra   reindeer   ass   otter   kangaroo   Half-n-half Clue   6. castoro   panther   lioness   ox   beaver   Half-n-half Clue   7. delfino   hare   dolphin   gorilla   mare   Half-n-half Clue