Physiology

Red pandas are endothermic; meaning that they rely on external heat sources to regulate body temperature. They also pant and sunbathe to help regulate body temperature. They use their fur to maintain body temperature.

Red pandas have a simple stomach and a short intestine like most carnivores. This means that they have a low metabolism and eat most of the day to make up for the lack of nutrients their digestive system absorbs from their plant based diet. 

Red pandas have a four chambered heart and a  closed circulatory system like most mammals. Their blood is carried through the body with arteries, veins, and capillaries.