1. Panthera tigris   tiger   wolf   leopard   lion   Hint Half-n-half Clue   2. Balaenoptera musculus   whale   cow   man   rat   Half-n-half Clue   3. Alopex lagopus   fox   zebra   giraffe   wolf   Half-n-half Clue   4. Canis lupus   cow   camel   rhinoceros   wolf   Half-n-half Clue   5. Rattus rattus   rat   whale   leopard   tiger   Half-n-half Clue   6. Diceros bicornis   rat   giraffe   rhinoceros   camel   Half-n-half Clue   7. Equus zebra   leopard   frog   zebra   cat   Half-n-half Clue