Dawn of the Expanse
The Death Koala of Australius IV
The scourge of the Australius system, the Death Koala is an 8m, vicious mineral-based lifeform.
It is known that it can be milked for food, but doing so is often more trouble than it is worth.
Nuking them from orbit, while the only way to be sure, causes them to swarm; they seem sensitive to the seismic disruptions caused by bombardment cannons.