Have just seen out of upstairs window our cat in another garden that backs onto us with alleyway in between. She appeared to be being fed by two men, then she went into their house. She seemed very friendly with them. She's often very sick with food that we haven't fed her; I thought she'd been getting guinea pig food or something from next door, but now I think it must be from her second home. Has anyone else had this with their cat, and does anyone have any advice?