Rat

"I ain't hear a thing. Probably just a rat." "A rat?" "Man, this is a spaceship. Ain't no rats in space!" "Technically, everything's in space."

- Dominion forces on the Moros

Rats are small vermin mammals that evolved on Earth and were later transported to the Koprulu Sector by terrans. They have established themselves successfully in urban environments, and often infested what few areas of Tarsonis City that did not incinerate their garbage, such as in the Gutter.