1. Most contagious disease   Tuberculosis   Common cold   Malaria   Leprosy   AIDS   Hint Half-n-half Clue   2. Fastest land animal   Antelope   Gazelle   Cheetah   Tiger   Hare   Half-n-half Clue   3. Smallest bone in the human body   Tibia   Stirrup   Ulna   Radius   Humerus   Half-n-half Clue   4. Fastest fish   Eel   Bluefin Tuna   Cosmopolitan Sailfish   Shark   Swordfish   Half-n-half Clue   5. Largest land animal   Elephant   Lion   Hippopotamus   Giraffe   Rhinoceros   Half-n-half Clue   6. Largest mammal   Rhinoceros   Blue Whale   Giraffe   Elephant   Hippopotamus   Half-n-half Clue   7. Bird with the largest egg   Albatross   Geese   Turkey   Ostrich   Mute Swan   Half-n-half Clue