Moved into a house once..40 years ago now... and while we were carrying in stuff, this old grey & white cat strolled in the door and 'announced' ..."I come with the place".
   She proceeded to make herself at home and ask when supper was. Well, it turned out she had done similar things at several places in the area. She would disappear for a couple days sometimes, but seemed to think we were the cushiest, and was around maybe 70% of the time. She did NOT like supper to be late, and would walk up to the nearest adult and nip them on the ankle to remind them that the cat was hungry.....
She was still around when we moved 4 years later. I always wondered how she dealt with the new owners.