I think that all beings have a chief spirit that they are made in the image of, which also reflects their personality, and what/how they think/act, and the way that they behave, etc. And with human beings, this chief Spirit is of course God, but, like, in the Garden of Eden, I think each "animal" that Adam got to "name" (according to a language that was pure back then (before Babel) and perfectly wrapped up that beings whole personality, and the way they thought/acted/behaved, etc) But and/or anyway, I think these "animals" in the Garden of Eden that Adam got to define/name, etc, might have actually been angels, or was at least a physical manifestation of that spirit beings entire behavior/personality that Adam got to "name", etc. And that each kind or type of animal we have now, each has a chief common spirit to which they return to, or get rejoined back with when they pass away, or when they die, etc. Don't forget that there are many, many books in the Bible that use animal likenesses/beasts to represent/describe nations and people groups, etc, representative of, I believe, of the angels who became jealous of man (who was made in God's likeness/image, and not an animals, etc) and who rebelled against both God and man, and who took the authority over the earth/national groups away from man in the Garden, etc. Anyway, I don't think these other images/likeness of quote/unquote "animals/beasts" representative of nations are a coincidence, but very, very much accurately describe the fallen angels who represent them, or gave birth to them, or made them, etc, (these different nations/people groups/world powers that would come about over the ages), etc. And the angels who did not rebel, I believe are still the cheifs of certain types of animals, or animal likenesses, etc, and is what happens with animals when they die, etc. Just like what happens with man and God when man dies, etc, God being the cheif, primary head Spirit of man, and to whim man returns to/rejoins with/becomes back a part with when he dies, etc.
As for the rest, I thought I made it clear that I wasn't talking about reincarnation, but it's "whatever" I guess...
And my "source" is God the Father, and the Trinity, etc, do with it what you like, etc. And before that, it was the Bible, who got me introduced to Them, etc. Again, do with it whatever you like. I also have as a source what has been learned so far in this modern era, or ever since 2000 years ago also, which They have encouraged me to use and take full advantage of as well, and it has played a part in all of this also, etc.
Again, do with it what you like.
God Bless.