Louise Spilsbury 
What Is the Structure of an Animal? [PDF ebook] 

Being able to compare the structure and anatomy of different families of animals and detect their differences and similarities is an essential skill in life science studies. This book takes the reader through the basic anatomical features that characterize a broad range of animal families, including crustaceans, fish, and birds. Key science terms are defined, accompanied by labeled photographs that make even the most unfamiliar of animal structures easy to grasp for readers.