I don't remember any of them. My guides have revealed some of the facts of a handful of them to me. They have also told me that of my 17,046 total lives all but 3 have been as a human. I've never asked about the non human lives. I had always assumed that meant as animals, like an elephant, but elsewhere is possible. I know souls from elsewhere choose to incarnate here. The other reason I think it's rare is that earth has been described to me by my spirit guides as the masterclass. "As one starts their journey from soul to soul with a body [and back again, and so on and so on], you generally have easy lives. When you return to source/heaven/god after every lifetime, you will be given a choice to stay in that realm that you are put in or to go back to the master class [Earth]to attain a higher level. You can make the decision to return to the master class at any time. If you choose to go back to Earth, it would be for the specific requirement to have the goal of growing your soul to get to the next level, only you are not consciously aware of it once you incarnate."