In What Do Animals Think and Feel?, the biologist Karsten Brensing has something astonishing to tell us about the animal kingdom: namely that animals, by any reasonable assessment, have developed the sophisticated systems of social organization and behaviour that human beings call 'culture'. Dolphins call one another by name and orcas inhabit a culture that is over 700,000 years old. Chimpanzees wage strategic warfare, while bonobos delight in dirty talk. Ravens enjoy snowboarding on snow-...