Brown bear

The brown bear (Ursus arctos) is a large bear that lives in Eurasia and North America. It is one of the biggest animals on land that eats both plants and meat. Male brown bears are usually bigger than females, and their fur can be many colors, from light cream to dark brown. Brown bears have strong muscles on their shoulders and big paws that help them dig in the dirt.

Brown bears live mainly in forests, often in high places. They eat many different things, but most of their food comes from plants. Sometimes they hunt small animals like insects and rodents, and sometimes large animals like moose. In coastal areas of Alaska, they especially like to eat salmon when the fish come close to shore. Brown bears usually live alone, except when they are raising their cubs or finding a mate. Females have one to three cubs, and the cubs stay with their mother for up to four and a half years.

Although brown bear numbers have gone down in some places, they are still common enough that scientists think they are safe for now. However, some groups of brown bears, like the Himalayan brown bear and the Marsican brown bear, are in serious trouble because of hunting and loss of their homes. Brown bears are also famous and appear in many stories, artworks, and traditions around the world.

Etymology

The brown bear is sometimes called the bruin. This name comes from an old story called History of Reynard the Fox, translated by William Caxton. It started from a Dutch word meaning "brown".

The scientific name for the brown bear is Ursus arctos. This name comes from Latin, where ursus means "bear", and from Greek, where arktos also means "bear".

Evolution and taxonomy

Taxonomy and subspecies

Main article: Subspecies of brown bear

Carl Linnaeus first described the brown bear in 1758. Scientists do not all agree on how many types, or subspecies, of brown bears exist. Some studies say there are five main groups, while others say there are nine. As of 2005, scientists usually recognize 15 subspecies.

DNA studies show that, except for one group in the Kodiak Archipelago, brown bears in North America are mostly one big group. Bears along the Alaska coast are more related to nearby grizzly bears than to brown bears far away.

Evolution

The brown bear is part of the bear family. It evolved from an older bear species in Asia millions of years ago. Fossils show that brown bears moved into Europe and later into North America. They are closely related to polar bears.

Hybrids

See also: Grizzly–black bear hybrid and Grizzly–polar bear hybrid

Sometimes, a brown bear and a polar bear can have babies together, called hybrids. This has happened in zoos and in the wild in the Arctic. Scientists have studied these hybrids and found that different bear species have mixed their genes over time.

Description

The brown bear is a very large bear that lives in many parts of the world. Male brown bears are usually bigger than females. They can weigh from 80 to 600 kg, depending on where they live and the time of year. In spring, after waking up from hibernation, they weigh less because they haven't eaten much. By fall, they gain weight to get ready for hibernation.

Brown bears can be many colors, not just brown. Some have a mix of brown and cream-colored fur, especially on their backs. Their fur changes with the seasons, being thicker in winter and shorter in summer. They have strong jaws and big teeth, which help them eat different foods. Brown bears also have large claws for digging and other tasks, though they are not as good at climbing trees as some other bears.

Distribution and habitat

Main article: Distribution of brown bears

Brown bears live in many places, from sea level up to high mountains. They like areas with trees and open spaces. These bears once lived in Europe, Asia, Africa, and North America, but now they are gone from some areas and fewer remain in others. The biggest groups are in Russia, the United States, and Canada. In North America, they live in Alaska, and some areas further south.

Even though brown bears are not found as widely as before, they are still considered safe by experts. Some smaller groups are in danger because of losing their homes and hunting. Conservation efforts are helping in some places.

Behavior and life history

Brown bears are most active in the morning and early evening. They may stay active at any time, but those near humans often stay hidden at night. In areas far from people, many bears are active during the day, while younger bears stay busy all day. From spring to fall, a brown bear can double its weight, gaining up to 180 kg (400 lb) of fat to survive winter when it becomes less active. Though they don’t fully hibernate and can be easily woken, bears prefer to rest in protected spots during winter. These spots can be caves, tree roots, or hollow logs.

Brown bears have large brains for their size. They usually live alone but may gather at places with lots of food, like garbage dumps or salmon-filled rivers. Female bears with cubs are very protective.

Communication

Brown bears make many sounds, such as huffing, growling, and roaring. They also use facial expressions to show how they feel.

Home ranges

Brown bears live in large areas but don’t mind sharing space with others unless there’s food or a mate involved. Males travel farther than females. In places with plenty of food, like coastal Alaska, home ranges can be small, but in areas with little food, they can be very large.

Reproduction

Brown bears mate from mid-May to early July. Females become ready to mate between ages four and eight. Females may mate with up to four males in one season. Females mate every few years.

Males don’t help raise the young. Females give birth after a special process where the embryo waits to grow until winter. Cubs are born blind and tiny. They stay with their mother for about two and a half years, learning from her.

Dietary habits

Main article: Dietary biology of the brown bear

Brown bears eat many things, including plants like berries, grasses, and mushrooms. In spring, they eat plants and old meat from winter. In summer and fall, they eat fruits and insects. Near coasts, they eat crabs and clams.

They also eat fish, especially salmon in places like Alaska. Bears gather at rivers to catch salmon. Though they can hunt, they often just eat what’s available.

When near humans, they might eat farm animals, crops, and garbage.

Relations with other predators

Brown bears are usually safe from other predators but may face challenges from big tigers in some areas. They often chase wolves away from their food. They are stronger than smaller bears and usually win when they meet.

Longevity and mortality

Brown bears can live a long time. The oldest known wild bear was nearly 37. In captivity, they can live even longer. Young cubs face risks like starvation and accidents.

Hibernation physiology

Studies show that brown bears change their body in ways that might help humans understand diseases related to not moving much.

Relations with humans

Attacks on humans

Main article: Bear attack

See also: Bear danger

Brown bears usually stay away from places with many buildings or cities. They often avoid people and rarely attack at first. But they can be unpredictable and might attack if they feel threatened or surprised. Mothers with cubs are more likely to attack. Brown bears are very strong, so even one bite or swipe can be very dangerous.

Bear hunting

Main article: Bear hunting

People have hunted brown bears for thousands of years. They were hunted in Europe, Asia, and North America. Native Americans hunted bears for food, while Europeans often hunted them for sport. In Europe, rewards were once offered for killing brown bears, which made their numbers very low. Protection laws helped save them, but hunting still affects their numbers in northern Europe.

When Europeans moved to the western United States, brown bear populations disappeared in the 1800s and early 1900s. At first, people used spears or lassos to hunt bears, but rifles made hunting easier. By the late 1800s, rewards for killing bears were common, and farmers also clashed with bears. Grizzly bears got some protection from the US government in the 1920s. Today, brown bears can still be hunted in some American states, like Alaska, but hunters need a license.

Brown bear meat is eaten in some places. Indigenous people from James Bay (Eastern) Cree use bear meat in traditional dishes. In Asia and Romania, bear paws are considered special food.

In captivity

Bears have been kept since 1,500 BC. As of 2017, there are over 700 brown bears in zoos and wildlife parks around the world. In small spaces, bears often seem lazy and spend a lot of time resting. Better enclosures and care from zoo workers have helped reduce this behavior.

Brown bears have been popular in circuses and shows for a very long time. In ancient Rome, they were used in fights. In the Middle Ages, they performed tricks in streets. From the 1700s to 1800s, traveling circuses in Europe and Asia featured brown bears.

Culture

Further information: Cultural depictions of bears

Bears appear often in stories, art, and traditions. In many cultures, the mother bear is a symbol of love and protection for her babies. Some of the oldest cave paintings show bears. In stories for children, brown bears are often shown as friendly and warm. For example, “The Brown Bear of Norway” is a Scottish tale about a girl who helps a prince turned into a bear. “Goldilocks and the Three Bears” features three brown bears, and “Snow White and Rose Red” has a prince changed into a brown bear. The book Brown Bear, Brown Bear, What Do You See? helps young children learn colors. Smokey Bear, a well-known symbol for the U.S. Forest Service, teaches people about preventing wildfires.

Native American cultures see brown bears as very important and sacred. Wearing bear claw necklaces was a sign of bravery and respect.

In North America, brown bears are very popular and well-known. Finland’s national animal is the brown bear. Montana’s state animal is the grizzly bear. California’s state animal is the California golden bear. Madrid’s coat of arms shows a bear reaching for fruit on a strawberry tree. The Swiss city of Bern has a bear on its coat of arms. The brown bear is also on the back of Croatia’s 5-kuna coin, made since 1993.