Circulatory system

Differences:

Their large hearts help them pursue prey over great distances.

Same:

The cardiovascular system consists of the heart, blood vessels, and the approximately 5 liters of blood that the blood vessels transport. Responsible for transporting oxygen, nutrients, hormones, and cellular waste products throughout the body, the cardiovascular system is powered by the body’s hardest-working organ — the heart.

Small animals may not need a circulatory system because the interior cells are close to the surface. Oxygen absorbed from the environment by surface cells can diffuse to interior cells. Wastes produced by interior cells move a short distance to the surface and diffuse into the environment.

-The human system and the hyena system are similar because they both work the same.
-Full Body Cavities
-Heart
-Blood
-Blood Vessels
-Veins
-Capillaries
-4-Chambered Heart