1. 犀   rhinoceros   octopus   otter   lioness   Hint Half-n-half Clue   2. 河馬   antelope   hippopotamus   polar bear   hedgehog   Half-n-half Clue   3. 黒ヒョウ   bat   antelope   toad   panther   Half-n-half Clue   4. 鮫   shark   rhinoceros   antelope   hedgehog   Half-n-half Clue   5. 蛸   octopus   ox   rhinoceros   bat   Half-n-half Clue   6. 北極熊   polar bear   lioness   toad   bat   Half-n-half Clue   7. 獺, 川獺   toad   panther   hippopotamus   otter   Half-n-half Clue