the slowest animal in the world is snail.they crawl so slowly that you can't see if it is moving.let's learn some fun facts about reptiles.lizards can grow a new tail when the old one breaks,you can't see a snake closing his eyes,because their eyelids are transparent.crocdiles can hold their breath underwater for an hour.birds also have fun facts.flamingoes are pink,because of the nutrients in their food.penguins can swim and walk,but they can not fly.humingbird can stay in the air and they are the only birds that can fly backwards.le...the slowest animal in the world is snail.they crawl so slowly that you can't see if it is moving.let's learn some fun facts about reptiles.lizards can grow a new tail when the old one breaks,you can't see a snake closing his eyes,because their eyelids are transparent.crocdiles can hold their breath underwater for an hour.birds also have fun facts.flamingoes are pink,because of the nutrients in their food.penguins can swim and walk,but they can not fly.humingbird can stay in the air and they are the only birds that can fly backwards.let us learn facts about mammals.a hippo can run faster than a man,a cammel can close its nose to let the desert sand out.no two zebras are striped the same.a kangroo can balance on its tail and fight with his feet and hands.(展開)