1. 猬   reindeer   rhinoceros   hedgehog   whale   Hint Half-n-half Clue   2. 鬣狗   toad   hyena   gorilla   mare   Half-n-half Clue   3. 海狸   panther   ox   hyena   beaver   Half-n-half Clue   4. 猎豹   gorilla   walrus   cheetah   dolphin   Half-n-half Clue   5. 熊猫   panda   lioness   stag   hedgehog   Half-n-half Clue   6. 鲸鱼   walrus   panda   whale   octopus   Half-n-half Clue   7. 犀牛   rhinoceros   chimpanzee   beaver   whale   Half-n-half Clue