" In 2013, science writer Natalie Angier gave the centrality of female friendship a zoological boost, pointing out that, "In animals as diverse as African elephants and barnyard mice, blue monkeys of Kenya and feral horses of New Zealand, affiliative, long-lasting and mutually beneficial relationships between females turns out to be the basic unit of social life. "

― Rebecca Traister , All the Single Ladies: Unmarried Women and the Rise of an Independent Nation