In a Fisherian world, animals are slaves to evolutionary fashion, evolving extravagant and arbitrary displays and tastes that are all "meaningless"; they do not involve anything other than perceived qualities.
Richard O. Prum, The Evolution of Beauty: How Darwin's Forgotten Theory of Mate Choice Shapes the Animal World - And Us
aesthetics, choice, coevolution, evolutionary, meaninglessness, purposeless, ronald-a-fisher, runaway-process