A few years ago, I wrote an essay against the idea that nature was always nasty (see: “Nature, Not Always “Red in Tooth and Claw”). I think the whole essay pivoted on one important quote from the primatologist Frans deWaal, who explained why it is misguided to focus solely on the colder, cruel side of evolution. He wrote:
“The error is to think that, since natural selection is a cruel, pitiless process of elimination, it can only have produced cruel and pitiless creatures. But nature’s pressure cooker does not work that way. It favors organisms that survive and reproduce, pure and simple. How they accomplish this is left open” (2009: 58).
From there I pointed out several of examples of cooperation and altruism in nature, mostly among primates, but also in other mammal species. I would like to add another one that I learned from the BBC’s Blue Planet II: the relationship between false killer whales (Pseudorca crassidens) and bottlenose dolphins (genus Tursiops). As the inimitable David Attenborough narrates in the clip below, pods from the two species were seen meeting near the New Zealand coast, and the audience is led to expect hostilities or predation… “But then, something truly extraordinary happens.”