1. Slowest mammal   Tortoise   Three-toed Sloth   Snail   Man   Millipede   Hint Half-n-half Clue   2. Heaviest snake   Viper   Reticulated Python   King Cobra   Anaconda   Boa Constrictor   Half-n-half Clue   3. Bird with the largest wing span   Albatross   Falcon   Eagle   Ostrich   Pelican   Half-n-half Clue   4. Largest bird   Eagle   Peacock   Albatross   Ostrich   Vulture   Half-n-half Clue   5. Most common non-contagious disease   Tooth decay   AIDS   Typhoid   Malaria   Cholera   Half-n-half Clue   6. Most common blood group in humans   O   A -   A +   AB -   B +   Half-n-half Clue   7. Longest cells in the human body   Brain Cells   Nerve Cells (Neurons)   RBC   Megakaryocyte (blood cells)   WBC   Half-n-half Clue