Collectively undertaking the first sustained examination of Chaucer's representation of non-human creatures since Beryl Rowland's Blind Beasts in 1971, this book connects work in critical animal studies and close-readings of Chaucer's texts. Grouped under five headings—the material creature, animal lessons, becoming-animal, contested boundaries, and cross-species discourse—the sixteen essays combine various analytical frameworks, from medieval natural science to critical animal studies. The resulting readings enlarge and re-center critical discourse not just about Chaucer's non-human animals but also about his representation of gender, genre, and the place of the human being in the universe of species.