When one attains Hispashtus Haguf and removes himself from any fealing of his body he is able to elevate himself to the upper worlds. Upon reaching the world of Atzilus he will see the future. Its possible to also know the future in the lower worlds from hearing the various proclamations there. When going to the upper worlds he may see dogs and people. These represent the Kelipos found in the world of Assiya.
 Keser Shem Tov 202; Likkutei Yekarim 5; Tzivaas Harivash 129