42 Most Exotic and Amazing Animal Species

Scientists have documented over 20,000 species of fish, 6,000 species of reptiles, 9,000 birds, 1,000 amphibians, 15,000 species of mammals and over a million species of insect - here are some of the strangest, most amazing and most threatened species in the world. Some of these animals may appear harmless but are all too deadly, while others look vicious and are simply rare and endangered.