Can dragonflies eat other dragonflies

because they are various large insects of the order Odonata or suborder Anisoptera, having a long slender body and two pairs of narrow, net-veined wings that are usually held outstretched while the insect is at rest. Also called regionally darner, darning needle; Also called devil's darning needle, ear sewer; Also called mosquito fly, mosquito hawk; Also called needle, skeeter hawk; Also called snake doctor, snake feeder; Also called spindle.