1. 草龜   squirrel   bear   tortoise   zebra   Hint Half-n-half Clue   2. 鼠   goat   dog   rat   lizard   Half-n-half Clue   3. 松鼠   lizard   squirrel   tortoise   sheep   Half-n-half Clue   4. 老虎   giraffe   tiger   horse   lion   Half-n-half Clue   5. 驢   donkey   zebra   mouse   giraffe   Half-n-half Clue   6. 狼   cat   rat   wolf   tortoise   Half-n-half Clue   7. 蛇   snake   camel   elephant   wolf   Half-n-half Clue