Jai Sri Ganesha,
Classification of beings is not that easy chapter even for Vedas and the Puranas,
Yet time has scripted lower in terms of that being static,
Upper lower are those that beasts which can activate self in truth with nature both ways, indeed they possess the true realization that to intercept event on merit in their orbit,
But time has graded man to be on top of a pedestal to reach at the echo of self to meet with the truth of cause,
May Lord Bless all,
Thanks, please