Like many 90’s kids, I was obsessed with dinosaurs. I loved The Land Before Time and took pride in my many accumulated dino-facts. While my passion for prehistoric animals is mostly a thing of the past, I was drawn to this book after reading and enjoying the author’s previous work, The Rise and Fall of the Dinosaurs. I learned so much from this book and kept pestering my boyfriend with mammal facts (did you know bats are the only flying mammals, ever??!!). Brusatte’s writing is intelligent and unpretentious and imbues a freshness into a field that often comes across as stuffy and archaic. I think it's fair to compare this The Dawn of Everything but instead of focusing only on humans, it’s about all of Mammal-kind.