My porch cat just hung around expecting to be fed. I had just moved in and assumed she was a neighbor cat that was used to visiting. Then one day she showed up with a left front paw the size of a frisbee and I took her to the vet. She then became my housemate. Later I figured that she had been the cat of the previous residents, college students who, no doubt, had to leave and Asphodel had chosen that time to take one of her three day jaunts, returning to find an empty house.