Another fact is that adult dragonflies will devour just about anything they can catch. Dragonflies usually eat mosquitoes, bees, gnats, butterflies, termites, and other bugs. When they are in the nymph stage, they eat small fish, tadpoles, mosquito larvae, worms, and aquatic insects.
Not posetive but I'm pretty sure this isn't a dragonfly bit actually a damselfly. Damselflies are thinner and told to hold their parallel against the body. They are basically dragonflies but more dainty.