Therianthropy

Therianthropy isn't exactly to do with ones soul. It CAN, but there's cases where it wouldn't (lack of belief in souls, plenty of atheist therians exist). It's when someone identifies as some shape or form as a non-human animal. Otherkin are folk who apply this towards mythological creatures or even potentially aliens(although I've heard the term star-child used in that context). For many it's more seemingly psychological or having a mix of empathy and other deep connections towards a particular species(s).

I used to have an assortment of beliefs about it if you had asked me about 8-10 years ago. As I've grown older I realize how much of an agonistic I really am. There's very little you can prove or disprove about anything like this. I certainly feel misplaced in this body time to time, but I embrace the fact I am human and appreciate the wonderful things I can do as such (being intelligent, having thumbs, and all that is kind of awesome). If reincarnation and such does exist, then we're here to have a human experience. (:
What I find unfortunate is when many young therians/kin seem to get so frustrated about this and express so much hate for being human. 

Either way. I don't know why I feel the way I do nor do I really care. All that matters is being comfortable with oneself. ^^