Callosian

The Callosians were a race of 2-meter-tall weasel-like mustelinoids that looked identical to the Selonians. They were native to the Outer Rim planetn Callos. They developed a sophisticated culture, centered on a lifestyle of scholarship and philosophy. In 3 BBY the Galactic Empire attacked their planet and destroyed its entire ecosystem, rendering the world uninhabitable. Those who didn't perish in initial assault, were killed by extreme low temperatures of the new planet's climate. Most Callosians who were away from the planet at the time of attack defied logic and returned to their devastated homeworld, presumably to die.