Comparative Anatomy Dissection
By: Maria Soria and Katy Watkins
Exposed Body Cavity
Comparative Anatomy: Similarities
Comparative Anatomy: Differences & Unique Structures
2. The rat and pig are most closely related because their internal organs look and function almost exactly the same. For example, the have the same digestive and cardiovascular system. The rat dissection pictures were a mere minimization of the pig dissection in regards to the abdominal area. Also, the animals are the two most similarly structured externally. Both have four legs and a tail, ears, etc. Overall, they are the two most similar of all the animals we dissected.