The H.P. Lovecraft Wiki

It was one of the army's outposts, stationed on the highest of the mountains to watch the one foe which earth’s cats fear; the very large and peculiar cats from Saturn, who for some reason have not been oblivious of the charm of our moon’s dark side.
~ H. P. Lovecraft , The Dream-Quest of Unknown Kadath

This subject contains information from the "Lovecraft Circle" Myth Cycles, and while guided by HPL are not based on his work alone. In the Dreamlands, the planet Saturn is populated by a race of strange cats, who occasionally travel to the dark side of Earth's moon. They are enemies of the cats of Earth.