Rothe
Rothe are bovine herbivores, common to the mountains of Galdos and Deglos where they are domesticated and kept for their wool and milk. Rothe are also known to thrive underground; distinct underground breeds exist such as the Marazdin Deep Rothe and the Underdark Deep Rothe.
The Gnomish Druid PCs:Deider of Pelar is (in)famous for attempting to introduce Rothe to underground settlements of Southern Negaria, only to find they were already present in the Underdark.
See also: Deider's Study on Cows