The hum of the ship was a soothing balm, vibrating through Captain Curly's massive, shaggy frame as he lay draped across it. His blue eyes, though half-lidded, flickered with an inner vigilance. A faint tremor ran through him, and a low, almost imperceptible rumble vibrated in his chest

(an Au where they were transformed thanks to an experimental formula and equipment into a cat. A crew member accidentally got infected by it while getting something from storage. Curly is a Maine Cat)