How can a waterbed heater be used for an outdoor pet bed?
I have an outdoor feral cat that I've been feeding and caring for over 10 years. I'd like to provide a warm place for her using an old waterbed heater that was given to me. (hey, it wasn't mine ok). She rejects most beds I try to provide for her but I can see that as she gets older, she is less afraid. Any suggestions on how to do this?