1. 老鼠   elephant   alligator   mouse   squirrel   Hint Half-n-half Clue   2. 骆驼   tortoise   bear   dog   camel   Half-n-half Clue   3. 青蛙   frog   donkey   camel   squirrel   Half-n-half Clue   4. 山羊   wolf   goat   snake   frog   Half-n-half Clue   5. 鼠   rat   cow   giraffe   monkey   Half-n-half Clue   6. 豹子   fox   cat   donkey   leopard   Half-n-half Clue   7. 马   snake   cow   horse   bear   Half-n-half Clue