1. 北極熊   rhinoceros   hedgehog   polar bear   panther   Hint Half-n-half Clue   2. 雄牛   whale   otter   stag   ox   Half-n-half Clue   3. 鮫   toad   shark   otter   hippopotamus   Half-n-half Clue   4. 犀   hare   otter   antelope   rhinoceros   Half-n-half Clue   5. 野兎   polar bear   hare   hedgehog   dolphin   Half-n-half Clue   6. 蝙蝠   bat   toad   dolphin   stag   Half-n-half Clue   7. 蟇蛙   toad   lioness   whale   shark   Half-n-half Clue