A toy koala
A koala was a marsupial native to Earth.
A horned koala-like creature was among the lifeforms kept in Narj's Miraculous Menagerarium in 2381. (LD: "I Have No Bones Yet I Must Flee")
A god-like entity resembling a koala was witnessed by several members of the crew of USS Cerritos while in the state of ascension or reversed brain death. (LD: "Moist Vessel", "First First Contact", "Mining The Mind's Mines", "In the Cradle of Vexilon")
When Badgey ascended to an "empty dimension" to create a new universe, this same Koala-like entity could be seen inside the portal he entered. (LD: "A Few Badgeys More")