Because the veterinary profession serves both animals and people, it occupies a unique position in current discussions of animal welfare and animal rights. Veterinarians are confronted daily by the central ethical fact underlying all humanâanimal interaction: animals as well as humans often have legitimate interests and moral claims that flow from these interests. This article explores some of the ways in which veterinarians must face the difficult task of balancing animal and human interests. I argue that the resolution of many ethical issues facing veterinarians will require consideration of fundamental questions regarding the value of animal life, careful analysis of key concepts that are applied to animals, and empirical investigations of animals and people who interact with them.