You really ought to apply the word "soul" to the context of what Marc was talking about. He didn't mean the soul in the sense of consciousness measured by human conception of intelligence. He meant the soul as the essence, or the being, of an animal that remains in existence even after the physical death. Doesn't really matter how smart or dumb they are. I really don't think Marc intended this to be a deep philosophical analysis of what constitutes a soul.
Well I wasn't sure what directio he did intend the discussion to be taken in and I am not sure you do either.
If we are considering an afterlife for animals then the question as to what is meant by 'animal' seems fair enough.
If someone has concluded that animals do have an afterlife - Do monkeys have an afterlife? rats? snakes? slugs? Is the animal afterlife full of dinosaurs? grasshoppers? fish? tadpoles?
What exactly is included in the animal afterlife and what is not? What basis is this decided upon?
This is all I am essentially asking.