Zoology is a branch of biology that studies the anatomical, physiological, behavioral and evolutionary characteristics of animals. It also explores the habits and distribution of animals as well as their interactions with their environment. All studies of living and extinct species of animals are covered by this discipline. Zoology branches out into diverse taxonomical fields such as mammalogy, entomology, ornithology and herpetology. The development of modern techniques of genetic engineering like DNA fingerprinting, has aided the understanding of animal populations. This book contains some path-breaking studies in the field of zoology. It outlines the processes and applications of this field in detail. Students, researchers, zoologists and all associated with the area of zoology will benefit alike from this book.