The Origin of Feces takes an important subject out of locker-rooms, potty-training manuals, and bio-solids management boardrooms into the fresh air of everyone’s lives. With insight and wit, David Waltner-Toews explores what has been too often ignored and makes a compelling argument for a deeper understanding of human and animal waste. Approaching the subject from a variety of perspectives — evolutionary, ecological, and cultural — The Origin of Feces shows us how integral excrement is to biodiversity, agriculture, public health, food production and distribution, and global ecosystems. From the primordial ooze to dung beetles, from bug frass, cat scats, and flush toilets to global trade, pandemics, and energy, this is the awesome, troubled, unexpurgated story of feces.

David Waltner-Toews is a veterinary epidemiologist and university professor emeritus at the University of Guelph. He was founding president of Veterinarians without Borders / Vétérinaires sans Frontières – Canada and a founding member of Communities of Practice for Ecosystem Approaches to Health in Canada. In 2010 the International Association for Ecology and Health presented him with the inaugural award for contributions to ecosystem approaches to health, and in 2019 he received an award from the World Small Animal Veterinary Association recognizing “veterinarians who have exhibited exceptional acts of valour and commitment in the face of adversity to service the community.”

Besides being an author of many scholarly books and articles, he has published six books of poetry, a collection of recipes and dramatic monologues, a collection of short stories, two novels and various books of popular science including On Pandemics: Deadly Diseases from Bubonic Plague to Coronavirus; The Origin of Feces: What Excrement Tells Us About Evolution, Ecology and a Sustainable Society; Eat the Beetles: An Exploration into our Conflicted Relationship with Insects and Food, Sex and Salmonella: Why Our Food Is Making Us Sick. His nonfiction books have won awards in the US and Canada, and have been published in Japanese, French, Chinese and Arabic.

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"David Waltner-Toews has written a fascinating little book on the subject, full of small- and large-scale insights, esoteric yet riveting assessments of globalization, and wisecracks that are no doubt unavoidable given the subject matter...It's a book worth reading." —New York Journal of Books

“At the heart (or gut) of The Origin of Feces is the idea that whether we like it or not, excrement is not only connected to every aspect of our lives but is also a crucial ingredient of life itself...Those sorts of ideas, along with a load of surprising facts and a good dose of levity (your inner five-year-old will think the poop jokes are hilarious), make for an enjoyably absorbing and profound read." —Canadian Geographic

“Uses humour and science to discuss its evolutionary, ecological and cultural perspectives. He shines a light on a subject many people would rather not think about, thank you very much." —The Record

“David Waltner-Toews picks up the thread with his impassioned treatise on the long, strange, even transcendent afterlife of poop in The Origin of Feces, a book whose cover is guaranteed to make you few friends at the coffee shop.” —Slate.com

"Waltner-Toews takes as humorous approach to the scatological subject as you can; one chapter is titled 'The Other Dark Matter.' But at the heart of the book is a rather weighty message: 'Unless we change how we think about' waste, he writes, 'we are doomed to forever live in it.'" — The Washington Post