Saying N% of species engaged in a behavior would be a meaningless statement. There are probably a few billion (real, not discovered) insect species. We will probably never discover and catalog them all genetically unless we invent nanotech before the big extinction. Insects are not relevant to this discussion; neither are mollusks, or really dumb fish, or worms, etc.. So scoping this to &quot;a plurality of species that have some intelligence&quot; is somewhat appropriate.<p>That said, this whole thread is nothing but people trying to anthropomorphize nature, so that they can pretend it&#x27;s more cuddly than it actually is. There is no chemical for morality secreted by all species. There is no evolution for empathy. These are things humans create through their own intelligence, and no amount of anthropomorophized behavior will make that not the case.