This article examines Terry Pratchett's "The Amazing Maurice" as a modern example of environmentally informed social dreaming about sustainable coexistence. In our increasingly ecologically-conscious world sustainability and coexistence have become key words in the discourse about social, economic and political relations. The problem of relating to what lies beyond the human, however, remains a challenge. This article argues that this problem is central to Pratchett's novel, making it a serious commentary on ecoliteracy and ecodesign. "The Amazing Maurice", it is claimed, is a work with a transformative purpose. It suggests that cooperation and coexistence are workable beyond what we assume to be their limits.