The Cudgeler is a large hadrosaur species native to the arid parts of Central Arcadia. The name of this creature stems from its primary defensive weapon: its tail. While not ending in a club-like structure like the tails of Earth's ankylosaurs, the Cudgeler's tail is a very dangerous weapon. Its sheer mass and force with which the hadrosaur can swing it is enough to break several wyvern bones at once. The girth of the tail is a result of its primary purpose, that being fat storage. Much like the Lancehorn, the Cudgeler adapted to life in arid areas by learning to store fat in its tail, all to go several weeks without food or water if need be. Over time, the tail also gained a defensive function which allows its wielder to fend off attacks from a number of predators.

This species shows clear sexual dimorphism. The specimen pictured above is a male. It possesses a colorful crest and throat sack, both of which serve to draw the attention of the less colorful females. Females possess smaller crests and smaller throat sacks. The latter being present in both sexes shows that the throat sack has a purpose other than for courtship. In fact, the sack amplifies the sounds made by Cudgelers, thus allowing them to communicate over vast distances.
Cudgelers typically live in small herds with a dominant male, his harem, and their younglings. For these small groups, long-distance communication is a key to survival. While the fat storage in a Cudgeler's tail can allow it to survive for weeks without food and water, it still needs to be replenished at some point. Therefore, each group is on an endless journey in search of resources. Whenever one small herd finds an oasis during their travels, each member will let out a series of loud bellows that serve to aid other herds in finding the same oasis at a later date. These "water calls" are not super precise, but they at least give a direction for other groups of Cudgelers to travel towards, as well as a potential final push for those who might have otherwise given up and fallen to the relentless desert heat.