Dwarfs are initially able to ride Ram mounts. These mounts are purchasable from Veron Amberstill who is located outside of Ironforge, in the Dwarf and Gnome starting zone of Dun Morogh

The regular mounts come in three forms.

Brown Ram		Gray Ram
Speed: 60% Minimum Level: 40 Riding Skill: 75 Cost: 10		Speed: 60% Minimum Level: 40 Riding Skill: 75 Cost: 10
White Ram
Speed: 60% Minimum Level: 40 Riding Skill: 75 Cost: 10

The epic mounts come in three forms.

Swift Brown Ram		Swift White Ram
Speed: 100% Minimum Level: 60 Riding Skill: 150 Cost: 100		Speed: 100% Minimum Level: 60 Riding Skill: 150 Cost: 100
Swift Gray Ram
Speed: 100% Minimum Level: 60 Riding Skill: 150 Cost: 100

WoW Insider's Guide to the Mounts of the World of Warcraft
Table of Contents		Index