You have to have in mind that its origin is effectively consequence of hormonal variations of the female organism during the stage of heat, but that these don't have repercussion only at a physical level, but also psychological.
The female suffers a metamorphosis that can end in an extension and tumefaction of the vulva, inflammation of the mammary glands and in more severe cases accompanied by milk secretion.
In the behavioral aspect you must make a difference between the various variations manifested by the female with respect to her affective environment. By the exteriorization only from herself and to herself guided by her maternal instinct.
IN the first of them, the female combines nervous stages, lack of tranquility and apathy with all that surrounds her with others in which she shows an excessive affective dependence.
On the second, she let's her instinct guide her. She conditions her nest using all the available materials in the. Besides clothes that are at her reach as the adoption of any kind of as her puppy.
Even when disappearing in a spontaneous way all these symptoms, not for it must you deny the importance that it has, and the necessary measures that should be adopted to cure it partially or totally. The cause of it as its secondary effect.
The measures to adopt are in part obligation of the owners and part from the veterinarians and are clear enough. At home and from the owners side, they will have to hide during the day, and at night if necessary, the mattresses, baskets, blankets and any other sleeping receptacle. This also goes for the doll orthe dog may have adopted as her puppy.
Also you must take the dog to the veterinary for him to prescribe a hormonal treatment or similar that will put a quick solution to the problem.
And last, if needed only, the surgical extraction of the uterus and ovaries. This must be done only and just only as a last resource. This obviously will eliminate the problem from its origin. Though it may seem somewhat harsh you must not forget that it is not only of usual practice for the veterinary, but highly recommended to those owners who don't want any puppies at home.