Catmology (catfinition) – the earliest recorded or observed instance of a specific feline’s appearance somewhere.
In use: “They argued over his catmology, with one insisting that he used to sit on the fence across the street, and the other saying, “No, that was a different cat.” In the end, the discussion did little to further their understanding of his age or how and why he’d come to be ‘their’ cat. They could only agree that he now ruled the house.”