The Fur Person by May Sarton
“A Fur Person is a cat who had decided to stay with people as long as he lives. This can only happen if a human being has imagined a part of himself into a cat just as the cat has imagined part of himself into a human being.”
Sarton’s own cat is the model for this delightful novella in which she imagines his journey from stray to gentleman cat. It’s a short and utterly charming read, complete with how the cat sees his world and sings to it.