A cat has adopted up and lives with us most of the time. He disappears for days, goes somewhere maybe or just to catsdom where they hang out together talking about the stupid people they live with......
We had a couple of cats who did that over the years. One of them was quite clever. When talking to the neighbours, we discovered that he had adopted half a dozen families. Spent a few days with each of us and got pampered by all of us. A large beautiful Tuxedo tom cat, with a pink nose. We called him Pinky. One of the other families called him Sir, because he looked so elegant when he walked, like a real gentleman.