1. Rana tigrina   lion   tiger   leopard   frog   Hint Half-n-half Clue   2. Felis domesticus   cat   giraffe   dog   tiger   Half-n-half Clue   3. Rattus rattus   camel   frog   rat   giraffe   Half-n-half Clue   4. Bos taurus   fox   elephant   leopard   cow   Half-n-half Clue   5. Camelus dromedarius   rat   wolf   camel   elephant   Half-n-half Clue   6. Canis familiaris   dog   camel   rat   elephant   Half-n-half Clue   7. Giraffa camelopardalis   camel   lion   giraffe   rhinoceros   Half-n-half Clue