Within current political, social, and ethical debates - both in academia and society - activism and how individuals should approach issues facing nonhuman animals, have become increasingly important, 'hot' issues. Individuals, groups, advocacy agencies, and governments have all espoused competing ideas for how we should approach nonhuman use and exploitation. Ought we proceed through liberation? Abolition? Segregation? Integration? As nonhuman liberation, welfare, and rights' groups increasingly interconnect and identify with other 'social justice movements', resolutions to these questions have become increasingly entangled with questions of what justice and our ethical commitments demand on this issue, and the topic has become increasingly significant and divisive. The book considers how this question, and contemporary issues facing nonhumans (such as experimentation, hunting, and factory farming) should be answered by drawing on both theory and practice in order to provide grounded, yet actionable, ways forward. Indicatively, the book covers topics such as: - The intersection between interspecies ethics and the ethics of war and self-defence - Nonhuman animals as political subjects and acting agents - Whether we should intervene for nonhuman animals in cases of natural disaster - Various explorations of why the nonhuman movement may not be succeeding as well as it could be - Comparisons between the nonhuman movement and other social movement - Arguments for and against intervening to help or save nonhumans, and how far we may go - What intervention could ultimately mean for nonhumans The book is therefore intended not only to provide new and interesting insight into the area and important contemporary discussions, but also to constructively aid the nonhuman movement and unite theory and practice on the crucial issues. With the nonhuman movement and its past approaches currently being questioned as a success, more nonhumans than ever being harmed and exploited, and a growing gulf between activists and scholars, this book will not only be a timely addition to the literature, but an attempt to bridge these gaps and move both theory and practice - and thus the movement and field - forward.