Strongest Beasts in the World. Legends are built on their sturdy backs. Capable of pulling 670 tons (or carrying 134 tons on their backs), ychen bannogs are the strongest beasts of burden in the known world. Tamed ychen bannogs can haul entire communities, or even small castles, and a clever dwarf with a ychen bannog at her disposal can carve out enormous riverbeds, haul enormous stones, or reshape entire valleys with ease.