Important facts about dragonflies are that they have been on Earth for about 300 million years. Dragonflies live in all continents but Africa. Finally they are carnivores.(eat meat) Now hear are some interesting facts about dragonflies. Dragonflies flap their wings 30 times a second. They are known as the snake doctor because they can bring dead snakes back to life.The largest dragonfly fossil has two and a half feet wingspan!