While I was living in Botswsna it was the elephant.  And it still empowers me as a big high brother would his/her small and fragile human relation.  I actually learned to call them,  which I find incantations still do when visiting the Kansas City zoo as long as there are no human distractions ...as not interfering

I cannot physically make.the sound of their low frequency  but I can think/feel it and it is enough.  The matriarch turns her head in my direction and heads my way, then rest of the herd following.. ..unless there are newly born calves present

Try it, Open....