Sapiens: A Brief History of Humankind

by Yuval Noah Harari

There was just one exception to this general rule: the dog. The dog was the first animal domesticated by Homo sapiens, and this occurred before the Agricultural Revolution. Experts disagree about the exact date, but we have incontrovertible evidence of domesticated dogs from about 15,000 years ago. They may have joined the human pack thousands of years earlier. Dogs were used for hunting and fighting, and as an alarm system against wild beasts and human intruders. With the passing of generations, the two species co-evolved to communicate well with each other. Dogs that were most attentive to the needs and feelings of their human companions got extra care and food, and were more likely to survive. Simultaneously, dogs learned to manipulate people for their own needs. A 15,000-year bond has yielded a much deeper understanding and affection between humans and dogs than between humans and any other animal.4 In some cases dead dogs were even buried ceremoniously, much like humans.