George Hill was a pet animal, an alien decapus lifeform that was brought aboard the Federation starship USS Bozeman and kept as a sort of ship's mascot by the Starfleet bridge staff. George Hill was a present in 2278 when the vessel departed Starbase 12 for it's fateful mission into the Typhon sector. The decapus was trapped in a temporal causality loop for 90 years with the rest of the crew. (TNG novel: Ship of the Line)