You know of Pat Shipman at the very least because of her recent and, dare I say, highly controversial and excellent book The Invaders: How Humans and Their Dogs Drove Neanderthals to Extinction. If you’ve not read it, do so. But, in the mean time, another book she wrote in the same area, The Animal Connection: A New Perspective on What Makes Us Human, is now available on Kindle for two bucks.

Why do humans all over the world take in and nurture other animals? This behavior might seem maladaptive—after all, every mouthful given to another species is one that you cannot eat—but in this heartening new study, acclaimed anthropologist Pat Shipman reveals that our propensity to domesticate and care for other animals is in fact among our species’ greatest strengths. For the last 2.6 million years, Shipman explains, humans who coexisted with animals enjoyed definite adaptive and cultural advantages. To illustrate this point, Shipman gives us a tour of the milestones in human civilization-from agriculture to art and even language—and describes how we reached each stage through our unique relationship with other animals. The Animal Connection reaffirms our love of animals as something both innate and distinctly human, revealing that the process of domestication not only changed animals but had a resounding impact on us as well.