A neighbours cat lives with me and hardly ever goes home where she has a more dominant sibling, a dog and two children to contend with. I keep my back door open when I am at home for much of the month and she deigns to kip upstairs and goes out at night. Her owners don't mind even though they hardly see her. Neither do they take umbrage when I told them that I named her 'Chicken'.
She's very sweet but she does kill birds and mice. The cat and not the neighbour, I mean