The branch of biology which focuses on studying the structural organization of living organisms is known as anatomy. It is an inter-disciplinary field which encompasses the principles of developmental biology, evolutionary biology, embryology and phylogeny. Animal anatomy refers to the study of the members of the animal kingdom. It is categorized into vertebrate anatomy and invertebrate anatomy. The field of vertebrate anatomy focuses on the body plans of vertebrates and is further classified into fish anatomy, amphibian anatomy, reptile anatomy, bird anatomy and mammal anatomy. Invertebrate anatomy deals with simple invertebrate organisms. These range from eukaryotic organisms like paramecium to multicellular animals like dragonfly, octopus and lobsters. Study of animal tissues such as muscle tissues, nervous tissues and connective tissues also falls under this discipline. The topics included in this book on animal anatomy are of utmost significance and bound to provide incredible insights to readers. Some of the diverse topics covered herein address the varied branches that fall under this category. Coherent flow of topics, student-friendly language and extensive use of examples make this book an invaluable source of knowledge