1. Hearing: The ears of the big-eared fox are mainly used to help it identify its direction and track its prey. Big-eared foxes have very sensitive hearing, and can easily hear the sounds of animals around them, even very weak sounds. They can collect sounds from different directions through the rotation of their ears and determine the position and distance of the sound source.

2, regulate body temperature: the fox's ear surface is used for heat dissipation and heat preservation, which helps to regulate body temperature. In summer, the blood vessels inside the ear expand, which can emit excess heat, while in winter, the ear will become more hypertrophy, which can reduce heat dissipation and maintain body temperature.