1. walrus   sapo   koala   pingüino   morsa   Hint Half-n-half Clue   2. jackal   panda, oso panda   chacal   bisonte   hipopótamo   Half-n-half Clue   3. koala   hiena   koala   chimpancé   delfín   Half-n-half Clue   4. octopus   pulpo   erizo   ballena   koala   Half-n-half Clue   5. hyena   leopardo cazador   hiena   pingüino   chacal   Half-n-half Clue   6. dolphin   rinoceronte   ballena   erizo   delfín   Half-n-half Clue   7. gorilla   castor   gorila   nutria   oso polar   Half-n-half Clue