Overview: Humans have long pushed themselves to explore extreme environments but which animals are the most extreme survivors? Camels can go days without water in the blazing desert and cockroaches have been known to survive heavy doses of radiation and poison. Humans have long pushed themselves to explore extreme environments whether attempting to climb Mount Everest or dive deeper into the ocean. But some animals can survive in these extreme conditions all on their own. Camels can go days without water in the blazing desert. Cockroaches have been known to survive heavy doses of radiation and poison. Which animals are the Most Extreme Survivors? Find out in this top 10 countdown of The Most Extreme.