Insects breathe using tracheae, to which air is supplied through spiracles.
Tracheae are protrusions of the insects' body walls that branch into a system of tubes inside the body. At the ends of these tubes are liquid-filled tracheae through which gas exchange occurs.
This medium-sized mammal is covered with brown fur.
The color can range from light to dark brown. In summer the fur is coarse and short, while in winter, it is softer and longer. The throat is cream or light yellow.
