Ratstallion

Years of chain-chugging potions in Dalaran's sewer system have allowed him to grow large, agile, and shadow resistant.

Riding Requirements:

This mount is available to all eligible characters on your account.
Level 10
Apprentice Riding

Source:

Achievement: Underbelly Tycoon

Notes:

One of the more unusual new mounts of Legion, this cunning rat is eye-catching. It is awarded by an achievement for farming Sightless Eyes in the new Dalaran Underbelly.

Introduced in:

Patch 7.0.3

Travel Mode:

Ground (+60% or +100% speed)

Speed depends on your riding skill.

More info on Wowhead:

Ratstallion taught by Ratstallion