Living habits of Alaskan grizzly bears

Grizzly bears, also known as Alaska brown bears, can reach 3.25 meters in length and 2.7 meters when standing upright. They are considered as the largest Xiong Ke and the largest land carnivore in the world. Alaska grizzly bears are huge and powerful, and can easily destroy tempered glass. Their average life span is 30 years, and they usually live alone, but they gather around streams, rivers, lakes and ponds during salmon spawning season. Grizzly bears have two kinds of fur. The fluff is short and soft and clings to the bear skin. Hair protection is the hair we see when we look at bears. They are longer and thicker than fluff. This layer of hair matches each other. They can keep grizzly bears warm and cold, and protect their skin from insect bites, dust and sunlight. Fur also plays a protective role and is sometimes used as a way of communication. For example, an angry bear will erect the hair on his shoulder to show more strength. Grizzly bears shed their hair in late spring and early summer every year. In other words, they shed their thick outer hair, revealing shorter and cooler fluff. During this period, grizzly bears will rub trees or rocks to shed their old hair. During the hair removal, they looked ragged and messy. It only takes a few weeks to remove the hair. After depilation, the grizzly bear looks like wearing a smooth and shiny fur coat. When the cold weather comes, grizzly bears will grow a thick layer of new long hair for the winter. Many bears together are called bears. Groups of bears are generally not seen. Only a few times, a grizzly bear will accept the appearance of other grizzly bears. In spring, male grizzly bears and female grizzly bears will spend a week or two together on the mating Li Festival. In the first few years, grizzly bear cubs will live with their mothers. Older cubs often spend the first season together after leaving their mothers, and then go their separate ways and settle down by themselves. Grizzly bears also get together for dinner in places where food is particularly rich. Grizzly bears eat a lot of salmon in summer. From June to 10, salmon swim upstream from the sea and lay eggs in the river. At this time, there are a lot of salmon in the river, and the grizzly bear will squat down by the river and put down his stomach to have a full meal. During salmon spawning season, as many as 15 grizzly bears fish on a river. There are so many salmon that grizzlies don't have to compete for food, so other grizzlies are allowed to appear. The bear cave is where grizzly bears spend the winter. Most grizzly bears dig holes, usually on hillsides or on dams of lakes and rivers. Adult grizzly bears always live alone in a cave, but the mother bear will share a hole with her cubs. Young grizzly bears who have just left their mothers sometimes use a hole. A grizzly bear's hole is not much bigger than its own body. Once in the hole, it can only have room to stretch and turn over. This helps to keep warm. The heat of the grizzly bear's body keeps the cave cold all winter. In winter, grizzly bears' caves are often covered with thick snow. This can reduce the heat dissipation in the bear hole and keep the bear warm. There is always an air vent in the bear cave to the outside. This means that bears can breathe fresh air all winter. This hole is usually located away from strong winds. It takes several weeks for grizzly bears to fully recover from hibernation. The first task after waking up is to find something to eat. They move slowly and often have to walk a long way to find edible green grass. Although grizzly bears' claws are very sharp and dangerous, they are more used to dig roots and insects than to kill big prey. When looking for wormholes, grizzly bears turn stones and wood with their claws. Grizzly bears spend hours eating grass, leaves, roots, seeds and berries. They sometimes kill some small animals, such as mice and gophers. Grizzly bears eat sweets. They like the smell of berries and honey. In order to get honey, grizzly bears even attack hives surrounded by angry bees. Grizzly bears are experts in fishing in areas where there are salmon in the river. Different grizzlies have different skills. Some squatted on the shore and caught the passing salmon. Others will stand in the middle of the river on four legs, waiting for the fish to swim into their feet and mouths. The key to the survival of grizzly bears is to find enough food. If a grizzly bear doesn't have enough food in summer and autumn, its body doesn't have enough fat for the winter. Grizzly bears like to live in places with many different food sources. Many other animals eat the same food as grizzly bears, but there is always enough food without competition. Male grizzly bears compete with his male grizzly bears during mating. However, the most dangerous competitor of grizzly bears is human beings. In Canada and the United States, human poaching and habitat destruction are putting grizzly bears in danger of survival.