1. chimpanzee   pipistrello   scimpanzé   tricheco   orso polare   Hint Half-n-half Clue   2. walrus   bisonte   balena   tricheco   scimpanzé   Half-n-half Clue   3. bison   lontra   bisonte   canguro   renna   Half-n-half Clue   4. whale   rospo   sciacallo   balena   riccio   Half-n-half Clue   5. dolphin   rinoceronte   ippopotamo   asino   delfino   Half-n-half Clue   6. cheetah   asino   ghepardo   lontra   porcospino   Half-n-half Clue   7. ox   leonessa   bue   polpo   rospo   Half-n-half Clue