What controls the respiratory rate of a animal?

The respiratory rate of an animal is primarily controlled by the brainstem, specifically the medulla oblongata and pons, which regulate the rhythmic pattern of breathing. Chemoreceptors in the body detect changes in carbon dioxide, oxygen, and pH levels, signaling the brain to adjust the respiratory rate accordingly. Additionally, factors such as physical activity, stress, and environmental conditions can influence the respiratory rate by signaling the need for increased or decreased oxygen intake.