Introduction: Grazers and Browsers in a Changing World -- An Evolutionary History of Browsing and Grazing Ungulates -- The Morphophysiological Adaptations of Browsing and Grazing Mammals -- Nutritional Ecology of Grazing and Browsing Ruminants -- The Comparative Feeding Bahaviour of Large Browsing and Grazing Herbivores -- The Comparative Population Dynamics of Browsing and Grazing Ungulates -- Species Diversity of Browsing and Grazing Ungulates: Consequences for the Structure and Abundance of Secondary Production -- Impacts of Grazing and Browsing by Large Herbivores on Soils and Soil Biological Properties -- Plant Traits, Browsing and Gazing Herbivores, and Vegetation Dynamics -- The Impact of Browsing and Grazing Herbivores on Biodiversity -- Managing Large Herbivores in Theory and Practice: Is the Game the Same for Browsing and Grazing Species -- Grazers and Browsers in a Changing World: Conclusions.