1. Largest muscle in the human body   Calf Muscles   Sartorious   Gluteus Maximus   Cardiac Muscles   Stapedius   Hint Half-n-half Clue   2. Smallest bird   Kingfisher   Kiwi   Sparrow   Kittiwake   Hummingbird   Half-n-half Clue   3. Heaviest internal organ in the human body   Liver   Pancreas   Stomach   Large intestine   Heart   Half-n-half Clue   4. Most contagious disease   AIDS   Common cold   Leprosy   Tuberculosis   Malaria   Half-n-half Clue   5. Fastest fish   Eel   Cosmopolitan Sailfish   Bluefin Tuna   Swordfish   Shark   Half-n-half Clue   6. Heaviest dog (breed)   English Mastiff or St. Bernard   German Shepherd   Great Dane   Bull Dog   Irish Wolfhound   Half-n-half Clue   7. Fastest marine animal   Dolphin   Shark   Squid   Killer Whale   Sperm Whale   Half-n-half Clue