1. Camelus dromedarius   rat   lion   frog   camel   Hint Half-n-half Clue   2. Diceros bicornis   rhinoceros   rat   wolf   tiger   Half-n-half Clue   3. Equus zebra   horse   cat   zebra   man   Half-n-half Clue   4. Homo sapiens   wolf   rhinoceros   man   cow   Half-n-half Clue   5. Panthera tigris   wolf   tiger   lion   leopard   Half-n-half Clue   6. Canis lupus   rhinoceros   lion   wolf   tiger   Half-n-half Clue   7. Felis domesticus   cat   rat   elephant   rhinoceros   Half-n-half Clue