My sister had a cat move in with her. She found out he really belonged across the street, and went to speak with the owner. When the owner saw which cat it was, he said “Oh, that one? Sure, keep him.” And my sister decided it would be best for everyone, cat included, if she did. Her husband and girls already liked this cat. Unfortunately, his name was Butch but she didn’t change it. They had Butch for about 10 more years, I seem to recall.