The book is a popular science account of the traits that make a mammal a mammal. Each chapter considers a distinct characteristic of mammals and asks how that trait evolved and how scientists came to understand it. Through these accounts the story emerges of how the unique type of animal that is a mammal evolved.
Liam Drew questions throughout what our mammalian-ness has to say about being human and weaves together historical anecdotes, personal stories, and lots of zoological curiosities.
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