Scarab beetles or Scarabs belong to Scarabaeidae family which houses over 30,000 species of beetles around the globe. However, the classification is not stable based on different competing theories because new theories are presented now and then. Many of the species of common scarab bugs mentioned in this article might not be recognized by this family as the species get the lower rank of subfamily or they might be elevated to family rank. For instance, some of the families have been removed including Bolboceratidae, Ochodaeidae, Glaphyridae, Geotrupidae, Pleocomidae and Glaresidae. Some of the well-known beetles currently defined consist of Hercules beetles, June beetles, dung beetles, rose chafers, Goliath beetles, and enormous rhinoceros beetles.