Physiology

Red panda is warm blooded. Their circulatory system is just like the humans. Oxygen goes into the lungs and carbon dioxide comes out. It also goes in to oxidize the blood, then the oxidized blood is sent around the body, and at the same time the unoxidized blood comes back where it meets with the oxygen and so on. 

Red pandas like giant pandas breathe with their lungs with the help of the diaphragm muscles. The air is inhaled through the mouth or nose then passes through the narrow bronchiole finally reaching the alveoli. The oxygen in the gas is absorbed by the red blood cell, it is delivered to other cells in the body that is in need of oxygen. 

To manage their new grassy diet, red pandas gained adaptations, including an elongated wrist bone used to grasp bamboo when feeding called a pseudothumb. Because they retained the digestive system of a carnivore, a red panda has to eat 20 to 30 percent of their body weight in bamboo each day. Pandas will occasionally opt for foods like fruits, insects and bird eggs, too.