The main function of cardiovascular system is transportation: on the one hand, it transports nutrients and oxygen to tissues and cells in various parts of the body for their physiological activities; On the other hand, metabolites produced by tissues and cells, such as carbon dioxide and urea, are transported to the lungs, kidneys and skin for elimination. Hormones in the body are also transported through blood and lymph, thus regulating body fluids. In addition, it also plays an important role in protecting the body and regulating body temperature.
The blood specific gravity of healthy cats is 1.054, the erythrocyte sedimentation rate is 3.0 mm/h, the clotting time is 3 minutes, and the heart rate is 120 ~ 140 beats/min. During exercise, excitement, fear, overheating and heart rate will all increase physiologically.