Put another way: "animals are vessels for souls while waiting for reincarnation". It now applies to everything souls (possibly) reincarnate into, while still be

Put another way: "animals are vessels for souls while waiting for reincarnation". It now applies to everything souls (possibly) reincarnate into, while still being true. I think that viewed in this way, it is obvious that the Buddhist concept of a soul is not human centric. The soul would be an entity trying to escape a cycle of reincarnation (and one of the potential candidates for reincarnation is a human). Aliens could fit right in there as just another vessel.