1. oso polar   dolphin   chimpanzee   polar bear   ox   Hint Half-n-half Clue   2. castor   beaver   porcupine   ass   mare   Half-n-half Clue   3. leopardo cazador   antelope   mare   bat   cheetah   Half-n-half Clue   4. murciélago   koala   bat   jackal   dolphin   Half-n-half Clue   5. morsa   hedgehog   ox   walrus   shark   Half-n-half Clue   6. sapo   dolphin   toad   gorilla   beaver   Half-n-half Clue   7. burro, asno   hedgehog   octopus   ass   hare   Half-n-half Clue