Brown bear is a large terrestrial mammal of the genus Urnidae, widely distributed in Eurasia and North America. It is one of the largest extant terrestrial carnivores, with males usually larger than females. The limbs are robust and powerful, with long and curved claws, suitable for digging and climbing. It is omnivorous and its diet includes berries, nuts, insects, fish, and small mammals. Eat in large quantities in the fall to store fat in preparation for winter hibernation. Mainly live in forests, mountains and tundra, with strong adaptability. It is a solitary animal with a strong sense of territory. The territory of male brown bears can reach hundreds of square kilometers.

Dipodidae, also known as jumping pocket mice, belongs to the rodent order and rodent family. The jumping mouse has a medium to small body, a large head, large eyes, a short and wide snout, and long whiskers. The fur color is light, mostly sandy yellow or sandy gray, without luster; Close to the scenery of the habitat. Originating from southwestern Africa, it is widely distributed in arid and semi-arid regions of Asia, Africa, and Europe, living in the northern parts of North America and Eurasia, as well as in desert and grassland areas throughout China. Having a hibernation habit, one will find a hole to hide, build a nest, and then hibernate, using the fat accumulated in the tail to supplement the body's energy consumption during hibernation; It mainly eats plants and also preys on insects in summer.

Black bears are carnivores and members of the bear family. There are a total of 7 subspecies. Female body length is 110-150 centimeters, male body length is 120-189 centimeters; Tail length less than 12 centimeters; Shoulder height is 70-100 centimeters. Females weigh 40-140 kilograms, while males weigh 60-200 kilograms. Residing in mountain forests, usually active at night, sleeping in tree holes or caves during the day, good at climbing trees and swimming; Can walk upright. Poor vision, sensitive smell and hearing; Their diet is diverse, feeding on plants, fruits, and seeds, and sometimes also insects, bird eggs, and small mammals. Has a habit of hibernating, hibernating in the cave throughout the winter, unable to eat or move, and half asleep