Brown bear (scientific name: Ursus arctos) is one of the most widely distributed large terrestrial mammals in the northern hemisphere. It is widely distributed in Eurasia and North America. It is named for its brown or golden hair and is an important top predator in the ecosystem. It belongs to the Mamiaceae, including several subspecies, such as the grizzly bear (Ursus arctos horribilis) and the Kodiak brown bear (Ursus arctos middendorffi).

The lazy bear is a mammal of the genus lazy bear in the order Carnivora, with a black body, rarely dark brown or reddish brown, a crescent-shaped white spot on the chest, and a light-colored nose and face. The hair is long and messy. Under feeding conditions, life can reach 40 years. The sloth bears are found in Sri Lanka, India, Nepal and Bhutan. It inhabits early and humid forests, shrubs, savannas and grasslands, mostly below 1500 meters above sea level, and occasionally up to 2000 meters above sea level, such as the Western Ghats in India. It feeds mainly on termites, but also on small vertebrates, fruits, and insects.

Also known as the grizzly bear, it is one of the largest mammals on land, known for its strong physique and enormous size. The origin can be traced back to the Etruscan bear in Asia, which has evolved and spread over a long period of time and is now found in multiple regions of North America, Europe, and Asia. Having a robust physique, well-developed muscles, and sharp claws up to 15 centimeters in length, although not good at climbing trees, he is an excellent swimmer and runner. It is an omnivorous animal with a wide range of diets, from plant roots to fish and large mammals. Known for its strong adaptability, it can survive in various environments, including desert edges, high mountain forests, and even the Arctic region.

Also known as the grizzly bear, it is one of the largest mammals on land, known for its strong physique and enormous size. The origin can be traced back to the Etruscan bear in Asia, which has evolved and spread over a long period of time and is now found in multiple regions of North America, Europe, and Asia. Having a robust physique, well-developed muscles, and sharp claws up to 15 centimeters in length, although not good at climbing trees, he is an excellent swimmer and runner. It is an omnivorous animal with a wide range of diets, from plant roots to fish and large mammals. Known for its strong adaptability, it can survive in various environments, including desert edges, high mountain forests, and even the Arctic region.

It is a robust forest animal with a female body length of 110-150 centimeters and a male body length of 120-180 centimeters. It weighs 65-150 kilograms for females and 60-200 kilograms for males. Has glossy lacquer black fur, brown or reddish brown on the nose and face, and a distinct inverted herringbone white or yellow spot on the chest. It is an omnivorous animal that mainly feeds on plant-based foods, as well as insects, fish, and small mammals. Distributed in multiple countries in Asia, including China, India, Japan, etc., due to human activities and hunting, the number of black bears has decreased and is classified as near threatened. In China, black bears are second-class protected animals and are legally protected

It is a robust forest animal with a female body length of 110-150 centimeters and a male body length of 120-180 centimeters. It weighs 65-150 kilograms for females and 60-200 kilograms for males. Has glossy lacquer black fur, brown or reddish brown on the nose and face, and a distinct inverted herringbone white or yellow spot on the chest. It is an omnivorous animal that mainly feeds on plant-based foods, as well as insects, fish, and small mammals. Distributed in multiple countries in Asia, including China, India, Japan, etc., due to human activities and hunting, the number of black bears has decreased and is classified as near threatened. In China, black bears are second-class protected animals and are legally protected

The polar bear is a species of bear in the family Ursidae, and is the world's largest terrestrial carnivore, also known as the white bear. The body is large and robust, with a shoulder height of up to 1.6 meters. Adult males weigh between 300-800 kilograms and can grow up to 2.5 meters in length. Females are relatively small, weighing 150-300 kilograms and measuring 1.8-2 meters in length. Similar to brown bears, but without shoulder humps. The head is relatively smaller than other bears, with small and round ears and a slender neck. The skin is black, and due to transparent hair, it usually appears white in appearance. There are also yellow and other colors, and the body is huge and fierce.

The polar bear is a species of bear in the family Ursidae, and is the world's largest terrestrial carnivore, also known as the white bear. The body is large and robust, with a shoulder height of up to 1.6 meters. Adult males weigh between 300-800 kilograms and can grow up to 2.5 meters in length. Females are relatively small, weighing 150-300 kilograms and measuring 1.8-2 meters in length. Similar to brown bears, but without shoulder humps. The head is relatively smaller than other bears, with small and round ears and a slender neck. The skin is black, and due to transparent hair, it usually appears white in appearance. There are also yellow and other colors, and the body is huge and fierce.

The polar bear is a species of bear in the family Ursidae, and is the world's largest terrestrial carnivore, also known as the white bear. The body is large and robust, with a shoulder height of up to 1.6 meters. Adult males weigh between 300-800 kilograms and can grow up to 2.5 meters in length. Females are relatively small, weighing 150-300 kilograms and measuring 1.8-2 meters in length. Similar to brown bears, but without shoulder humps. Living in waters covered by ice in the Arctic Circle. The depth of winter caves can reach the permafrost layer. The preferred habitat is the floating ice in the Arctic Ocean. The fractured and refrozen ice edges and pressure ridges provide the best hunting grounds. Usually acting alone.

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

The brown bear is a mammal belonging to the genus Ursa in the family Ursidae. He has a strong physique, with raised shoulders and a short tail behind him. The fur color is mostly brown or brownish yellow; Elderly individuals appear silver gray in color; Childhood is brownish black. The lifespan under wild conditions is 20-30 years. The earliest ancestors of bears were all canids. After evolving into bears, they relied more on fruits for food and were prone to food shortages during winter. To survive, hibernation was undoubtedly the best way. The only mammal that can go six months or even longer without eating, drinking, urinating, or defecating. The energy needed to maintain necessary bodily activity during winter comes from stored fat in the body.