The aim of this book is to encourage veterinarians, at whatever stage of their career or training, to take a deeper, more perceptive interest in renal disease. It seeks to provide an introduction to the aspects of greatest fundamental and clinical interest and to give access to more detailed reviews in the literature. It also aims to draw the attention of human nephrologists to the `experimental' animals which live in nearly every household and the wealth of insights which they offer through the similarities and differences of their encounters with renal disease.