Which plane separates the body into cranial and caudal parts?

The transverse plane is the correct choice as it divides the body into cranial (head) and caudal (tail) sections. This horizontal slice through the body provides a cross-sectional view and is crucial in anatomy for understanding how various structures relate to one another in these specific regions.

In anatomical terminology, "cranial" refers to structures that are located toward the head, while "caudal" refers to those that are oriented toward the tail or back end of the body. This division is particularly relevant in veterinary medicine for diagnosing and treating conditions that affect specific areas of the body.

While the coronal plane divides the body into anterior (front) and posterior (back) sections, the horizontal plane often refers to the same concept as the transverse plane and could lead to confusion in certain contexts. The sagittal plane divides the body into right and left portions, which is not relevant to the cranial and caudal distinction. Thus, the transverse plane is the most accurate answer for this classification.