1. Largest mammal   Giraffe   Hippopotamus   Rhinoceros   Elephant   Blue Whale   Hint Half-n-half Clue   2. Slowest mammal   Three-toed Sloth   Millipede   Snail   Tortoise   Man   Half-n-half Clue   3. Largest bird   Eagle   Ostrich   Vulture   Albatross   Peacock   Half-n-half Clue   4. Longest venomous snake   Krait   Python   King Cobra   Rattlesnake   Viper   Half-n-half Clue   5. Fastest marine animal   Shark   Killer Whale   Squid   Sperm Whale   Dolphin   Half-n-half Clue   6. Fastest growing plant   Coconut   Bamboo   Ferns   Banyan   Palm   Half-n-half Clue   7. Longest snake   Anaconda   Reticulated Python   King Cobra   Boa Constrictor   Viper   Half-n-half Clue