I know I'm going to be a dog in my next life aren't I?
I debate my thoughts on this regularly and always come back to what I know true: No, once human, always human, even if the "human" doesn't look like your understanding of a human because you're living on another planet. One of the gifts of "soul" is that we can merge our Consciousness with any sentient being and everything is sentient even if can't prove that. We can "become one" with a flock of birds, a school of fish, a dog, a cat, a wolf, a whale, even a rock. We share the Consciousness that gives life to them. We can share the experiences, we just can't be that experience.
I debate my thoughts on this regularly and always come back to what I know true: No, once human, always human, even if the "human" doesn't look like your understanding of a human because you're living on another planet. One of the gifts of "soul" is that we can merge our Consciousness with any sentient being and everything is sentient even if can't prove that. We can "become one" with a flock of birds, a school of fish, a dog, a cat, a wolf, a whale, even a rock. We share the Consciousness that gives life to them. We can share the experiences, we just can't be that experience.