The Kamchatka brown bear (scientific name: Ursus arctos beringianus) is a subspecies of brown bear. They are native to the Kamchatka Peninsula in the Russian Far East, hence the name. They are also known as the “Far Eastern brown bear”. Here are 10 amazing Kamchatka brown bear facts.

1. They are huge

In the 18th century, the first Europeans to come to the Kamchatka peninsula were surprised by the huge sizes of brown bears (and also by their number).

Kamchatka brown bear is the biggest bear in Eurasia. They are actually almost as big as the Kodiak bear, one of the biggest bear species in the world (the others being the polar bear).

Male Kamchatka brown bears can have a body length of 2.4 meters (7.9 feet) to 3 meters (9.8 feet) tall on hind legs, and a weight of up to 650 kg (1,430 lb).

2. Kamchatka brown bears are omnivores

They eat both animals and plants. But, like pandas, they have the digestive system of carnivores, so they are classified as Carnivora, despite plants making up a large portion of their diet, with some estimates as high as 80-90%.

They eat whatever they find: Salmon and Arctic char (a cold-water fish related to salmon) are major sources of protein. They also eat pine nuts, blueberries, crowberries, cranberries, mountain ash, and other berries along with a wide range of vegetation.

They also hunt sea otters and also scavenge on the seals and whales which are washed up on the shoreline.

3. They are very close relatives of the Grizzly bears

Kamchatka brown bears are very close relatives of Grizzly bears. They are also thought to be the ancestors of the mighty Kodiak bear.

There were 2 possible independent bear migrations from Asia to America:

  1. The narrow-skulled bears from northern Siberia through central Alaska to the rest of the continent becoming Ursus arctos horribilis (the grizzly bear)
  2. A southern migration of broad-skulled bears from Kamchatka peninsula to the Alaskan peninsula becoming Ursus arctos middendorffi (the Kodiak bear).

4. They are solitary animals

They are generally solitary in nature, like other bears and predators. Except for mating and for mothers with cubs, they prefer being alone. But, they can create large, dense groups in areas that are rich in food.

5. They can live up to 50 years under human care

Their average lifespan is 20-30 years in the wild, but, in captivity, they can live up to 50 years.

A captive Kamchatka brown bear with her cub
A captive Kamchatka brown bear with her cub at Tierpark Hagenbeck, Germany. They live longer under human care. Photo by Dinkum – Own work, CC BY-SA 3.0, Link

6. Females can begin to reproduce at 4 years old

Female Kamchatka brown bears begin to reproduce as early as 4 years of age. The typical litter size is 3-4 cubs.

7. They can travel long distances

According to the Wildlife Conservation Society (WCS) research, Kamchatka brown bears maintain a home at least 12 km2 (4.63 sq mi). And this range can extend greatly: when salmon and other food sources are scarce, their home ranges can be as large as 1100 km2 (424.7 sq mi).

Data from GPS-collared bears showed that they can make movements of up to 65 km (40 miles) and cross Kamchatka’s central mountain range to access different salmon runs.

8. Their population is healthy and productive

Kamchatka brown bears are still numerous. Their population is estimated at 8,000-14,000 bears in an area about the size of California (see notes 1). In fact, the Kamchatka peninsula is home to the densest population of brown bears in the world.

There are threats, however: as a result of the growing human population, agricultural and countryside housing development, road construction, logging, mining, and recreation have increased the number of bear-human contacts in recent years.

Kamchatka brown bear
A Kamchatka brown bear near Dvuhyurtochnoe lake, a freshwater lake n the Ust-Kamchatka region of the Kamchatka Territory, Russia, Photo by Robert F. Tobler – Own work, CC BY-SA 4.0, Link. Taken on July 23rd, 2015.

9.Kamchatka brown bears are not aggressive to humans

They are considered not dangerous to humans. Most of the time, they avoid humans. Statistically, only about 1% of human-Kamchatka brown bear encounters result in an attack. This is mostly because of a large food supply in the Kamchatka peninsula and low human population density.

They are also herbivorous, so, when one kind of food is not abundant, Kamchatka brown bears simply will change their diet instead of starving and as a result of starvation, being aggressive.

Compared to their Siberian counterparts (the East Siberian brown bear, Ursus arctos collaris), they are relatively harmless, as also noted by the first Europeans to come to the Kamchatka peninsula in the 18th century.

According to the International Conference on Bear Research and Management, the Kamchatka brown bear’s reaction to humans in South Kamchatka Refuge in 270 cases were (Igor A. Revenko; Kamchatka Ecology and Environmental Institute, Russia):

  • avoidance (frightened huff-huff and run away, run a short distance and then walk away slowly, just walk away slowly, or disappear silently: 190 (70%).
  • studying of humans, approach, identify, and then walk away: 38 (14%).
  • indifference (simply ignoring humans): 34 (12%).
  • threat demonstration: 8 (3%).
  • attack of humans: 2 (1%)

In 2008, however, around 30 starving Kamchatka brown bears besieged a mining camp and killed two guards.

Kamchatka brown bear
Despite being one of the world’s biggest bears, Kamchatka brown bears are not aggressive to humans. Photo by Milaw – Own work, CC BY-SA 3.0, Link

10. Bear-viewing is a popular tourist activity

There are tours where tourists can watch the Kamchatka brown bears from a distance of several meters.

Kamchatka brown bear range
Kamchatka brown bears live in the Kamchatka peninsula in far eastern Russia and surrounding islands. By Zoologist – Own work, CC BY-SA 3.0, Link

Some not so-amazing Kamchatka brown bear facts

Kamchatka brown bears are under the threat of poaching, over-hunting (trophy hunting, unfortunately, is common), and habitat loss.

Hunters kill about 300 brown bears a year from the Kamchatka Peninsula. There are also about 500-1500 bears becoming victims of poaching each year.


  1. According to the Wildlife Conservation Society (WCS) Russia website, “Kamchatka brown bear population counts for the region are based largely on the casual observations of hunters and forest workers and are scientifically questionable. More than a decade has passed since the last aerial survey of the region, and there is a desperate need to redefine survey methods to monitor the long term trends in the bear population”.


  • Kamchatka brown bear on Wikipedia
  • Brown bear reaction to humans on Kamchatka Peninsula, International Conference on Bear Research and Management. IGOR A. REVENKO, Kamchatka Ecology and Environmental Institute. PDF
  • “The Kamchatka Brown Bear” on the Kamchatka Peninsula website
  • “A review of bear evolution”. BRUCE MCLELLAN, Forest Sciences Research Branch, Revelstoke Forest District, RPO#3, Box 9158, Revelstoke, BC VOE 3KO; DAVID C. REINER, U.S. Fish and Wildlife Service, NS 312, University of Montana, Missoula, MT. PDF
  • “Up to 30 hungry and desperate bears have attacked and eaten two men in Russia’s wild far eastern region of Kamchatka, and have trapped a group of geologists at their remote site.” The Guardian
  • Kamchatka brown bear (Far Eastern brown bear) on the Bear Conversation website
  • Kamchatka brown bears on the Wildlife Conservation Society (WCS) Russia website
M. Özgür Nevres

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