1. nutria   otter   octopus   walrus   panda   Hint Half-n-half Clue   2. panda, oso panda   panda   cheetah   chimpanzee   beaver   Half-n-half Clue   3. foca   whale   seal   bison   dolphin   Half-n-half Clue   4. gorila   whale   penguin   gorilla   porcupine   Half-n-half Clue   5. castor   penguin   beaver   chimpanzee   jackal   Half-n-half Clue   6. pantera   panther   chimpanzee   hippopotamus   toad   Half-n-half Clue   7. buldog   hare   hyena   bulldog   reindeer   Half-n-half Clue