1. rhinoceros   Panthera tigris   Diceros bicornis   Rattus rattus   Elephas maximus   Hint Half-n-half Clue   2. elephant   Felis domesticus   Rattus rattus   Equus zebra   Elephas maximus   Half-n-half Clue   3. frog   Bos taurus   Balaenoptera musculus   Panthera pardus   Rana tigrina   Half-n-half Clue   4. rat   Rattus rattus   Canis lupus   Rana tigrina   Elephas maximus   Half-n-half Clue   5. lion   Rana tigrina   Panthera tigris   Panthera leo   Homo sapiens   Half-n-half Clue   6. tiger   Bos taurus   Balaenoptera musculus   Panthera tigris   Alopex lagopus   Half-n-half Clue   7. fox   Felis domesticus   Alopex lagopus   Giraffa camelopardalis   Rattus rattus   Half-n-half Clue