The examination of the skeletons of dogs and humans and their similarities and differences.

The most significant differences being the upright posture adopted by humans, the absence of collarbones in dogs, the attachment of the humerus of the dog to the chest wall along its entire length, plus the fact that humans walk on their whole foot, whereas dogs walk only on the equivalent of the human toes.

The systematic comparison of bodily structures and their functions in living organisms: In her class on comparative anatomy, Kitty learned about the similarities and differences in the structural parts of a physical body.