> We are the only creatures who can choose to manifest a selflessly compassionate ethos
Many cetaceans' brains showcase extremely complex and large insular cortex and neocortex regions of their brain, even when compared on a relative scale to their rest of their brain compared to human brains. Additionally, the complexity and granular size of their folds are much more than human brains. It is inconceivable that some of these cetaceans are not capable of the emotions of humans. In fact, it's even a pretty strong argument that these cetaceans possess more intelligence and emotional regulation than humans.
Well, they have a different environment with a greater need for extremely close social groups, so sensitivity to emotion may, indeed, be greater than ours in some ways.
That said, we have a conscience aka moral compass, a mind capapble of abstract thought and comprehension of morality, as well as a free will to choose whether or not to consider someone else's happiness in our ideals, attitudes, and behaviors.
Look at all the wonderful structures we design and build, and then how awfully we treat out-groups. We are capable of so much better, but why don't people give a sh_t?
I know why, and I've explained it in my comment history.