How Many Bears Are in the World by Species?

Earth is home to eight living bear species, and their combined global population likely falls somewhere between 500,000 and 600,000 individuals, though that number is more of an informed estimate than a precise census. The American black bear alone accounts for the majority of the world’s bears, while several Asian species number so few that biologists struggle to pin down even rough figures. Getting accurate counts of animals that roam enormous territories, avoid people, and often live in dense forest or Arctic ice is one of the hardest problems in wildlife biology, so the numbers below should be read as best available approximations rather than definitive tallies.

American Black Bear

The American black bear is by far the most abundant bear on the planet, with a population commonly estimated between 800,000 and 900,000 spread across Canada, the United States, and northern Mexico. That number has been climbing. A continent-wide analysis pooling state and provincial estimates suggested that black bear numbers were increasing by roughly two percent per year, though the authors cautioned that many of those estimates were closer to educated guesses than rigorous counts.¹ Black bears are habitat generalists that eat everything from berries to garbage, and they have adapted well to fragmented forests and suburban edges. Their recovery story is one of the brighter chapters in North American wildlife management, driven by regulated hunting seasons, habitat protection, and the bears’ own adaptability.

Even so, no one has ever conducted a single coordinated census of every black bear in North America. The continent-wide figure is a patchwork of state and provincial estimates produced using different methods at different times, some based on hair-snag surveys and genetic identification, others on hunter harvest models, and a few on little more than expert opinion. Researchers in places like Forillon National Park in Quebec have used spatial capture-recapture models based on hair-snag stations and found local densities of roughly three bears per ten square kilometers.² Scaling those local densities up to a continent is the leap that introduces uncertainty.

Brown Bear

Brown bears, including the grizzly bears of North America and the Eurasian brown bears that range from Scandinavia through Russia and into the Himalayas, are the second-most-numerous bear species. Global estimates generally fall around 200,000 individuals, with the vast majority living in Russia. Smaller populations persist in western Europe, the Balkans, Turkey, Iran, Central Asia, and the mountain west of Canada and the United States. This species has one of the broadest distributions of any land mammal, which genomic studies have confirmed by identifying at least five major evolutionary lineages across its range, including distinct populations in the Gobi Desert, the Himalayas, northern Mongolia, Europe, and North America.³

That geographic breadth masks enormous variation in how different populations are faring. Northern populations in the core of the North American range maintain relatively high genetic diversity, while fringe populations and isolated remnants carry much less. The Yellowstone Ecosystem population, cut off from the larger range that once extended south from the Canadian border into Mexico, has measurably lower diversity, and the island population on Alaska’s Kodiak Archipelago lower still.⁴ In practical terms, these isolated pockets may hold stable numbers for now, but their long-term genetic health is more precarious than the global total suggests.

Polar Bear

Polar bears are the most carefully monitored bear species, partly because their habitat sits at the front lines of climate change and partly because international treaties require ongoing population assessment. Researchers have identified 19 subpopulations spread across the circumpolar Arctic, of which 14 have usable abundance estimates ranging from about 160 to roughly 2,800 bears each. A comprehensive assessment placed the global population at about 23,000 bears, with a plausible range of roughly 16,000 to 31,000.⁵ That midpoint of around 23,000 is the figure most often cited by wildlife agencies and conservation organizations.

The outlook is concerning. Stochastic population models linked to climate projections under a business-as-usual emissions scenario showed drastic declines in polar bear numbers by the end of this century.⁶ Sea ice is shrinking not just in total area but in seasonal availability, and the bears depend on it as a platform for hunting seals. Satellite tracking of adult females in one subpopulation found that their summer range contracted by about 70 percent between the early 1990s and the 2009–2015 period, dropping from over 700,000 square kilometers to around 211,000.⁷ When bears are packed into smaller areas with less time on ice, they spend more energy and catch fewer seals. That dynamic is already visible in reduced body condition and lower cub survival in several subpopulations.

Asiatic Black Bear

The Asiatic black bear, sometimes called the moon bear for the pale crescent on its chest, lives across a vast swathe of southern and eastern Asia from Iran to Japan. Population estimates are vague, generally cited at somewhere between 35,000 and 50,000, but those numbers carry wide uncertainty. What is clearer is the trajectory of the species’ range. Historical distribution covered about 15.86 million square kilometers, while the current range has shrunk to roughly 7.85 million square kilometers, a contraction of nearly half.⁸ The bears have effectively been wiped out across huge portions of their former territory in western and central Asia.

Counting Asiatic black bears in the dense forests they inhabit is exceptionally difficult. A camera-trap study in the Indian Himalayas estimated local densities of about 2.5 individuals per 100 square kilometers in one wildlife sanctuary and just 0.3 per 100 square kilometers in another nearby sanctuary, illustrating how patchy populations can be even within the same mountain range.⁹ Extrapolating a handful of localized density estimates across an entire continent is the kind of arithmetic that keeps bear biologists up at night.

Sun Bear

Sun bears, the smallest of the world’s bears, live in the tropical forests of Southeast Asia. No reliable global population estimate exists. What researchers have instead are projections of decline tied to deforestation. A modeling study that linked sun bear populations to tree cover loss found that between 2000 and 2014, populations in mainland Southeast Asia dropped by roughly nine percent, while populations in the islands of Malaysia, Indonesia, and Brunei fell by around 22 percent.¹⁰ If tree cover loss continued at the same rate over a 30-year window from 2000, insular populations were projected to decline by more than 50 percent, a threshold that would meet the IUCN criteria for Endangered status on a regional level.

The sun bear faces a double threat. Alongside habitat loss from logging and palm oil plantations, the illegal wildlife trade takes a steady toll. Bears are captured for the traditional medicine trade and for keeping as pets. Sharply declining population sizes and a lack of natural dispersal between remaining forest fragments are eroding the genetic diversity of surviving populations.¹¹ The sun bear’s future is tightly bound to whether Southeast Asian tropical forests survive in connected blocks or continue fragmenting into isolated patches.

Sloth Bear

Sloth bears are found almost exclusively on the Indian subcontinent, with small populations in Sri Lanka and Nepal. The global population is often estimated at between 10,000 and 20,000 individuals, though once again these numbers carry significant uncertainty. Sloth bears are nocturnal, solitary, and live in dense forest, making them some of the hardest bears to survey. Occupancy studies have found that sloth bears tend to favor deciduous forests and show some association with termite mounds and fruiting trees, which makes intuitive sense given that termites and fruit form the core of their diet.¹² They have lost substantial habitat to agricultural expansion and face ongoing conflict with humans, partly because they can be aggressive when startled at close range.

Andean Bear

The Andean bear, also called the spectacled bear, is the only bear species in South America. It ranges along the Andes from Venezuela to Bolivia, living in cloud forests, páramo grasslands, and scrubby mountain terrain. Population estimates typically range from about 6,000 to 20,000, with the spread reflecting how little is known. Genetic analysis of bears from three Andean countries found worryingly low levels of genetic variability and strong isolation between populations, with gene flow estimates so low that the populations are essentially not exchanging individuals at all.¹³ The Ecuadorian population had the lowest genetic diversity ever recorded for any bear population at the time of that study. That kind of isolation, combined with ongoing habitat fragmentation from farming and road building in the Andes, puts the species in a precarious position even though it is not yet among the rarest bears by raw numbers.

Giant Panda

Giant pandas are the best-known conservation success story among bears. China has conducted four national panda surveys since the 1970s, each one more rigorous than the last. The third survey, carried out from 1999 to 2003, counted signs of 1,596 pandas. The fourth, from 2011 to 2014, found that the population had grown to 1,864 individuals living across about 2.58 million hectares of habitat.¹⁴ That increase was driven by decades of investment in habitat protection, bamboo corridor creation, and captive breeding programs. More than 88 percent of wild pandas live in three northern mountain ranges: Minshan, Qionglai, and Qinling.¹⁵

The headline number is encouraging, but not all populations are equally secure. Research on rear-edge panda populations in the Liangshan Mountains found a more troubling trajectory: conditions appeared worst during the second survey, improved somewhat by the third, but deteriorated again by the fourth, suggesting a worrying future for that peripheral group.¹⁶ Pandas at the edges of the species’ range are more vulnerable to habitat loss and climate shifts than those in the core, and losing those fringe populations would shrink the overall range even if the central population holds steady.

The Rarest Bears on Earth

Within the brown bear species sits a subspecies so rare it barely registers as a population at all. The Gobi bear, found only in the desert steppe of Mongolia’s Great Gobi Strictly Protected Area, is the world’s rarest bear. Long-term DNA-based monitoring estimated about 23 individuals in 2009, 28 in 2013, and 31 in 2017. The population density was less than one bear per 1,000 square kilometers, and the sex ratio was skewed toward males, which raises serious concerns about long-term persistence.¹⁷ Whole-genome sequencing has confirmed that the Gobi population carries some of the lowest genetic diversity and highest inbreeding levels of any brown bear group.³ Thirty-odd bears surviving in an increasingly arid landscape represent the thinnest margin between existence and extinction that any bear population occupies.

Why Counting Bears Is So Difficult

Bears are among the trickiest large mammals to count. They live at low densities across huge areas, they are often shy or nocturnal, and many species inhabit terrain that is hard for humans to access. The gold standard for bear population estimation is genetic capture-recapture: researchers set up hair-snag stations or visit natural rub trees where bears leave behind fur, extract DNA, identify individuals, and then use statistical models to estimate how many bears went undetected. A study in Banff National Park found that hair traps worked well for detecting female grizzlies and both sexes of black bears, but were terrible at catching male grizzlies, who were better detected at natural bear rubs.¹⁸ A similar approach in northwestern Montana visited thousands of natural rubbing sites to collect hair and detected 249 to 355 individual bears per year.¹⁹

Camera traps have become a common supplement, but they have their own limitations. A comparison of methods in the Canadian Rockies found that integrating camera-trap presence-absence data with genetic capture-recapture data did not actually improve the precision of grizzly bear density estimates, contrary to what researchers expected.²⁰ The upshot is that every population estimate you see for a bear species comes with a confidence interval that can be quite wide, and the global totals for most species are assembled from local studies that each carry their own uncertainties. The species with the most reliable global numbers are polar bears and giant pandas, both of which benefit from sustained, well-funded monitoring programs. For species like sun bears and sloth bears, the honest answer to “how many are there” is that nobody really knows.

The Bear Bile Trade and Its Toll on Asian Species

Several Asian bear species face a threat that does not apply to their North American or European counterparts: the demand for bear bile in traditional medicine. Bear bile contains ursodeoxycholic acid, a compound that has genuine pharmaceutical uses and is now synthesized in laboratories, yet demand for bile extracted directly from bears persists. In Vietnam, research documented that bear bile farming relies on restocking from wild populations, and farmers openly admitted to extracting and selling bile in violation of national legislation.²¹ The study described the situation as an example of wildlife farming failing to reduce pressure on a species that was once widely distributed and relatively abundant. Asiatic black bears and sun bears are the primary targets, and in countries where enforcement is weak, the trade continues to pull animals from already declining wild populations.

When Bear Species Overlap and Hybridize

As Arctic sea ice recedes and grizzly bear range expands northward, the two species increasingly overlap in parts of the Canadian Arctic and Alaska. Confirmed wild hybrids, sometimes called grizzly-polar bear hybrids or “pizzly” bears, have been documented. Nuclear DNA analysis has shown that the relationship between the two species is not entirely new: brown bears on Alaska’s Alexander Archipelago carry not only polar bear mitochondrial DNA but also an estimated five to ten percent of their nuclear genome from ancient polar bear ancestry, evidence of admixture deep in their evolutionary past.²²

This has fueled speculation that hybridization could threaten polar bears as a distinct species. However, a recent analysis concluded that while studies support the introgression of brown bear genes into the polar bear genome during the Pleistocene, no evidence supports a similar event happening today. Even if it did, the likelihood of hybrids adapting quickly enough to cope with ongoing sea ice loss is not considered scientifically plausible. The loss of genetic integrity through interbreeding is not currently regarded as a meaningful threat to polar bear survival.²³ The real threat remains habitat loss, not gene mixing. Hybridization makes for dramatic headlines, but it is a sideshow compared to the straightforward problem of disappearing ice.