The sweetest neighborhood kitty comes to visit me each day. She has no collar and no one claims her. She won't come inside and she refuses any type of food or drink I offer her. She still has her claws and fat belly so we've decided she's probably a mouser and a pretty good one at that.
She loves to sit right up on porch with me and watches over the neighborhood while I'm gardening. She's like my little guardian :)