The Cat Is A Cat.
Let us begin where all sane conversations begin. The cat is a cat. It is not a "fursona." It is not an "OC." It is not a costume zipped over a man with a fan in the head. It is a cat, in the way that a tree is a tree and water is wet, and no amount of squinting will reorganize the periodic table of my soul.
I drew a cat because I like cats. This is the entire mystery. There is no second layer. There is no hidden door behind the bookshelf. You have walked into an empty room and announced you found a cult.