Ideas about the vague term "souls" have always been within the realm of metaphysics whether religious or philosophical, lacking any hypothetical ideas or connection to science. In fact, such would be one of the first things most atheist scientists might shake their heads at as utter nonsense. And in this modern telecom science age, is another long held religious idea that feeds increasing numbers of unbelievers logic to leave religions. One reason I'm on this public forum is to have a casual soapbox to express some of my own unique ideas including such subjects of mind, consciousness, and neuroscience. However, I as a strong science oriented person, very much do not view "soul" as nonsense. And what may seem ironic to others, base leaning so on science itself though won't attempt to explain such herein beyond a terse following summary.
Within all organic animal creatures, but not plants are complex very low voltage oscillating electromagnetic fields. In fact all life, even that of plants, bacteria, and viruses, are structured around cells that have cell membrane outer walls consisting of back to back dual organic bilipid molecules that keep certain aqueous substances inside and other extracellular aqueous substances out. Bilipid molecules with two ends, have their water dissolvable, wettable hydrophilic ends connected together internally end to end, with their other hydrophobic, water repelling ends to either wall sides out. Thus form a wall that blocks external water soluble substances from moving in and those inside cells from moving out.
Such organic cell walls have complex life evolved protein channels through those walls that let only specific substance in including nutrients. A most key process that evolved life solved, was actively pumping via protein motor processes, negative ions from outside extracellular aqueous environments through such channels into cells and conversely pumping positive ions out of cells in order to create a steady negative voltage gradient from the external to internal that is usually around 80 millivolts (0.08 volts). Accordingly, all organic Earth life at their most basic levels are voltage systems. Animal species cells evolved further, especially chordates with dorsal hollow nerve cords termed notocords, to oscillate those low voltages within such cellular nerve cell containers in order to connect cells sensing outer environments to other internal nerve mechanisms that control movement, awareness, and function.
In more complex higher creatures, such voltage oscillations are termed brain waves. However current science despite many exceptional humans working on such neuroscience, IMO have mental blocks preventing them from grasping the purpose of such oscillating voltage fields while instead viewing brains more in the way of sequential voltage propagation of conventional electronic circuits while expecting the fields are mere epiphenomenon of core nerve cell action potential impulses. At the same time they are endlessly stumped wondering how it can be possible for what we holistically experience as mind, feeling, and being consciously aware of our whole bodies.
My explanation is that it is the whole electromagnetic fields within those organic nervous system impedance containers that is aware experiential animal life. Thus as intelligent entities, we are not our bodies or our nervous systems but rather those complex oscillating brainwave fields within. If such is true, then not only do we humans have mind but also all animal life from amoeba to worms to ants to fish to mice to humans including one's pets.
If there are Ultimate Intelligent Entities, I term UIEs, in the universe as I have mentioned in the past on this board, and they as non-organic, essentially immortal if not physically destroyed entities, visited our world as I suggest, then it is those electromagnetic fields that they might have figured out how to reproduce outside life bodies in order to also give those entities they allow and save for such, an immortal existence. If Jesus as I choose to believe is from such UIEs, then they might vaguely describe for the sake of we science primitives, such fields as "soul". And yes that includes the "soul" of not only humans but any other earth animal lifeforms including Max the Wonderdog and Peaches the Cat.