This text looks at human-animal interactions, especially some of the less well known aspects of the field. A number of studies in the book document some of the vast changes humankind has wrought upon the natural environment through the movement of various species of animals around the world. These chapters provide contributions to the understanding of contemporary ecological problems, especially the deforestation taking place to provide grazing for live-stock. The 31 contributions offer a shop-window of current approaches, primarily from a biological perspective.