Thuban 9

Thuban 9 is the ninth planet of the star. It's fully inhabited by cats. Long ago, life there was ideal. A sun provided plenty of warm, cozy light. The chicken-salmon roamed free. Yet, disaster loomed. The planet's rotation was gradually slowing. At first, it seemed beneficial. But then, it got too hot, and too cold. The top Thubanian scientists went to work. At last, they located a planet with the necessary orientation and magnetic field, Earth. The cats later moved to the "blue-blue shiny ball", as they call it. In, they were viewed as gods, and largely contributed to the Earthican culture.

After the events of "That Darn Katz!", the planet and it civilisation was likely destroyed.