It happens in all breeds. My sisters cocker spaniel had a false preg. and then produced milk. About the same time two kittens were dumped at her house and the cocker nursed those 2 kittens. The kittens have grown and had their own babies but still nurse her cocker. (The cocker finally had her first litter so now she is producing milk again.) I don't know what to tell you to do. Maybe someone with more knowledge can help you out.