World's biggest snake Anaconda found in South America. It has killed 257 human beings and 2325 animals. It is 134 feet long and 2067 kgs. Africa's Royal British commandos took 37 days to get it killed.
Smallest Chameleon Discovered on the rainforest floor of Nosy Be Island off the north-west coast of Madagascar, the tiny dwarf chameleon (Brookesia minima) is the smallest of the chamaeleonidae family. via [wiki]