McHugh’s book is remarkable for its expansive timeline, its global interest, and its equally wide-ranging use of sources. She begins by tracing the history of the dog’s origins from archaeological, genetic, etymological, and mythological/religious perspectives (though I should note that newer archaeological evidence proves that dogs existed even earlier than her sources suggest). She then moves on to discuss the relatively recent phenomenon of breeding, arguing cogently that the rise of breed dogs corresponded directly with human social changes: “The canine breed system…emerged as part of the process by which the world’s people were for the first time categorized according to race, sex, and gender. And this taxonomic process was inseparable from the imperialist politics it served” (66). Accordingly she discusses the royal and aristocratic associations of the greyhound—with its supposed breed quality of unparalleled loyalty—as well as the toy-breed lapdogs’ associations with lascivious, wealthy women. By the mid-nineteenth century, the dog show institutionalizes breed (and thus class) standards in what McHugh calls “a nostalgia for lost social orders” (104), namely for feudal society in the age characterized by the rise of the middle class, even as members of the bourgeois participated in the shows. These and similar connections between dogs and human social changes are followed by a discussion of non-breed dogs/mutts, in which McHugh argues that mutts came to represent anarchy and social protest by the twentieth century. She points to Beautiful Joe as a model: anti-cruelty novels often featured non-breed dogs as those subject to oppression, at the same time as they link stray mutts to poor or homeless humans. To this day, mutts have a special power not only of representing oppressed humans, but helping humans to “imagine new forms of identity and society” (169). Eventually, then, the “non-breed dog increasingly becomes associated with social critique and the breed dog with the status quo” (170). McHugh ends with a discussion of dogs’ role in scientific endeavors, noting that dogs are the most prominently used animals in science because of their tractability and the ease of obtaining them. But this also produces highly conflicted emotions, since the general sentiment is that “man’s best friend” should not be sacrificed in this way. This point helps reinforce the archaeological fact that dogs and humans have been associated with—and hence tangled up with—each other since the very beginning, even though it also provides a sort of justification: because of our shared history, it makes sense that we would employ canine research subjects to explore matters that bear upon our (mutual?) futures.