Efficient and Affordable Animal Physiology Tools for Veterinary Clinics, Research Labs, and Pet Care | High-Quality Equipment & Supplies" （注：原中文标题"Efficiency and Economy in Animal Physiology"已译为英文，并添加了使用场景如兽医诊所、研究实验室和宠物护理，同时包含SEO关键词如"affordable"和"high-quality"）

There is often confusion over the meaning and usage of terms such as efficiency, economy, effectiveness, optimization, and perfection in biology. This book defines and discusses these concepts within a broad evolutionary perspective and considers how evolutionary pressures can affect the economy and efficiency of animals. Chapters consider biomaterials, skeletal systems, muscular function, aquatic and terrestrial locomotion, and cardiovascular systems. The result is a book of interest to all biologists, particularly those working in the field of comparative physiology and evolutionary biology.