Comparative anatomy is a branch of biology that involves the study of similarities and differences in the structures of different organisms. This field focuses on comparing the anatomical structures, such as organs, tissues, and skeletal systems, of different species to understand their evolutionary relationships and adaptations. By examining the similarities and differences in anatomical structures across species, researchers can gain insights into the evolutionary history and relationships of organisms. Comparative anatomy is used in fields such as evolutionary biology, paleontology, and zoology to study the diversity and relationships of living and extinct organisms.