But these are tiny brains, aren't they? 1cm x 1cm or something on that scale. That is far smaller than most of the animals that we hunt, kill, experiment on etc

But these are tiny brains, aren't they? 1cm x 1cm or something on that scale. That is far smaller than most of the animals that we hunt, kill, experiment on etc. It's definitely uneasy though, because it prods away at the fundamental moral distinction between human and animal.