What kind of circulatory system does a hyena have?

Hyenas, being mammals, have a closed circulatory system. In a closed circulatory system, blood is contained within a network of blood vessels, including arteries, capillaries, and veins. This allows the blood to be pumped efficiently throughout the body to deliver oxygen and nutrients to the cells and remove metabolic waste products. The circulatory system of a hyena consists of a four-chambered heart, similar to other mammals, with distinct chambers (two atria and two ventricles) that facilitate the separation and controlled circulation of oxygen-rich and oxygen-depleted blood. The heart pumps the blood through the vessels, ensuring its constant circulation within the body. Overall, the closed circulatory system of hyenas enables the proper transport of substances, gas exchange, and maintenance of homeostasis within their bodies.