This book explores the movement towards the recognition of animal sentience in the law. It explores some first principles underpinning the recognition of animal sentience, including the nature and scope of sentience provisions, the connection between sentience and empathy, drafting issues, and the relationship between sentience recognition and animal rights. The book highlights the operation of animal sentience provisions in several jurisdictions throughout the world and considers some sector-specific applications and limitations of animal sentience recognition. The first book of its kind, it draws together different perspectives as to what this novel turn in the law might mean and where it might lead. The chapters provide a full picture of what the recognition of animal sentience might entail for humans, animals, and our environment, as well as the experiences of different legal jurisdictions in pursuing recognition of animal sentience. This collection is an essential read for both practitioners and academics alike, as well as any group seeking to advance the interests of non-human animals.