Rafalian mouse

A Rafalian mouse was a small rodent.

In 2372, Odo shape-shifted into the form of a Rafalian mouse after getting a complaint from Quark about the noise he was making as a Takaran wildebeest. Quark was still able to hear small feet running across the floor. 

Shalaza Rokor and Shaloza Trestan sold Rafalian mice in their pet shop on Deep Space 9's Promenade. (SS DS9 (The Manhunt Pool))