A galia beast was a type of animal lifeform.
History and specifics[]
In the year 2371, Tzuweri hallucinogens triggered on Deep Space 9 caused the station inhabitants to hallucinate, with one alien individual seeing a galia beast. A male Starfleet member also saw the creature, but Benjamin Sisko was able to show that the galia beast was just an illusion. (DS9 comic: "Fadeout")