This edited volume analyzes the belief in supernatural gamekeepers and/or animal masters of wildlife from a cross-cultural perspective. It documents the antiquity and widespread occurrence of the belief in supernatural gamekeepers at the global level. This interdisciplinary volume documents both the antiquity and the widespread geographical distribution of this belief along with surveying the various manifestations of this cosmology by way of studies from Europe, Asia, Africa, and North and South America. Some chapters explore the manifestations of this belief as they appear in petroglyphs/pictographs and other forms of material culture. Others focus on the environmental impacts of these beliefs/rituals and prescribed foraging restrictions by analyzing how they affect game harvests. The internationally recognized scholars in this volume assess the efficacy of this particular form of traditional ecological knowledge (TEK) and investigate if adherence to the belief in animal masters actually causes hunters to refrain from overharvesting wild game and thereby contributes to sustainable hunting practices. This volume is of interest to anthropologists, archaeologists and other social scientists researching traditional ecological knowledge (TEK), indigenous conservation, biodiversity, and sustainability practices, and animal deities.