The Brown bear is a large mammal with a notable hump of muscles over its shoulders. This animal is the second largest species of bear. The legs of Brown bear are strong with huge paws. Their claws are rather long on their front feet, allowing them to dig their dens as well as dig for food. The ears are relatively small and the face is concave while the head is large with powerful jaws. Brown bears have ability of standing and walking on their hind legs; they do so in order to determine location of a food source or to identify a threat. These animals have thick coat, varying in color from black to brown and blonde. The guard hair of these animals is longer, sometimes having white tip, which gives them grizzled appearance.
Crepuscular animals are those that are active primarily during twilight (that is, the periods of dawn and dusk). This is distinguished from diurnal...
An omnivore is an animal that has the ability to eat and survive on both plant and animal matter. Obtaining energy and nutrients from plant and ani...
Terrestrial animals are animals that live predominantly or entirely on land (e.g., cats, ants, snails), as compared with aquatic animals, which liv...
Altricial animals are those species whose newly hatched or born young are relatively immobile. They lack hair or down, are not able to obtain food ...
Nomadic animals regularly move to and from the same areas within a well-defined range. Most animals travel in groups in search of better territorie...
A territory is a sociographical area that which an animal consistently defends against the conspecific competition (or, occasionally, against anima...
A burrow is a hole or tunnel excavated into the ground by an animal to create a space suitable for habitation, temporary refuge, or as a byproduct ...
Polygynandry is a mating system in which both males and females have multiple mating partners during a breeding season.
Serial monogamy is a mating system in which a pair bonds only for one breeding season.
Dangerous animals demonstrate aggression and a propensity to attack or harass people or other animals without provocation.
Hibernation is a state of minimal activity and metabolic depression undergone by some animal species. Hibernation is a seasonal heterothermy charac...
Animal migration is the relatively long-distance movement of individual animals, usually on a seasonal basis. It is the most common form of migrati...
These bears are found in very small numbers from North America to Western Europe, Palestine, Eastern Siberia and Himalayan region. The habitat of the Brown bear is usually riparian areas. These bears live along rivers and streams in prairies, alpine meadows, woodlands and forests.
The brown bear is a territorial animal, leading solitary life. The bears usually forage in mornings and evenings, resting in cover by day; however, they are active at any time of the day. They spend the winter months in dens, entering a dormant state. Brown bears are not full hibernators, so can be woken at any time. Their dens are usually caves, hollow logs or crevices. From time to time, Brown bears congregate into large groups to feed. The groups have social hierarchy system, based on age and size. With coming of the autumn, some individuals travel hundreds of kilometers in search of a suitable source of food.
Brown bears are omnivores. What they eat largely depends on what kind of food is available at a particular season. Thus, in the spring they feed on grass and shoots, in the summer they eat berries and apples while in the autumn they consume nuts and plums. In addition, they eat reptiles, insects, roots and honey. Brown bears, living in the Canadian Rockies, feed upon mammals such as moose or elk whereas those in Alaska eat salmon in the summer.
Brown bears are serially monogamous, living with the same mate from several days to several weeks. During this time, the male competes with other males in the area, protecting the female from them. During the breeding season, which lasts from May to July, a female can mate with multiple males – behavior, that can be characterized as polygynandry. The period of gestation lasts 8 weeks, yielding 1-4 cubs. The cubs are ready to start foraging with their mother. The female breastfeed them until spring. For 2-4 years, the mother teaches the cub's survival techniques: the babies learn where to den, how to hunt, and how to defend themselves. Males don’t mate until they are able to compete with other males in the area for mating rights while females reach sexual maturity at 5-7 years old.
The major threats include habitat loss and fragmentation through the extension of human habitat: highways and settlements together with development of agriculture bring to decrease of their habitat. In addition, due to hunting on sheep and cattle, these animals have been persecuted by humans as predators of domestic livestock. Also, these bears are occasionally hunted for sport. On the other hand, some isolated populations of Brown bear are threatened with adverse genetic affects. And finally, these animals are poached for their paws and gall bladders that have high commercial value.
The population of the Brown bear is currently stable and not endangered. In the IUCN Red List, the species is classified as Least Concern (LC). The global population is more than 200,000 individuals with about 100,000 of them living in Russia and 14,000 – in the rest of Europe. Other countries with a large number of population include US (33,000) and Canada (25,000).
On one hand, being predators, these animals control prey species. On the other hand, they play important role in the ecosystem, dispersing seeds and thus sustaining the environment.