Heated Dog Bed

Last week my friend gave me a dog bed for our lovely dog (Shoe shine). My husband put the bed in her cage and she likes lying down on it. Shoe shine stays outside during day time and stays in the house at night time. Yesterday the temperature outside was dropping I put her in. I told my husband that the dog can stay in the house when its cold. I know that I need to get her a heated dog bed so that she can use it outside. If she have heated bed we might not worry too much about her when its cold. I do not want Shoe shine to get sick. She is a very good dog that my family loves.