Bears may have cute cubs, but don't be fooled. As Leonardo Dicaprio's character learned in The Revenant, approaching a bear cub is a bad idea. Every bear species demands respect - and fear. Their massive size and killing power make them a force to be reckoned with. Despite their cute appearance, bears are the largest carnivores on land and top their ecosystems as alpha predators. Most bear species are aggressive and territorial, using their sharp claws and teeth to defend themselves. They mainly eat berries, fish, and other local food, but will attack humans if threatened. All bear species can be deadly, and it's wise to fear them - especially the ones on this list.
About this list
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Polar BearScience MedicineSize:Polar bears are the largest bear species. They weigh up to 1,534 lbs (700 kg) and stand nearly 10 feet (3 meters) tall.
Location:They live in the polar regions inside the Arctic Circle.
Distinguishing Features: The white fur covers a polar bear's body. Some bears show brown coloring, likely from crossing with other bear species.
Why You Should Be Scared:Unless you spend much time on the ice flows, you might not worry much. Global climate change has caused habitat loss for polar bears, pushing their range much further south. As the largest land carnivore, dealing with a hungry one is unwise. They remain very aggressive despite what you learned from Coca-Cola commercials.
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Grizzly BearScience MedicineSize:Grizzly bears can reach 1,500 lbs (680 kg) and stand up to 9.8 feet (3 meters) tall.
Location:They used to inhabit most of North America except the East Coast. Now, they only live in the Western and Northern areas, extending through Canada and all of Alaska.
Distinguishing Features: Grizzly bears have brown, shaggy fur. Their name comes from the golden and grey tips of their hair, not a bad attitude as many people wrongly think.
Why You Should Be Scared:Grizzly bears become extremely aggressive when defending their young and territory. A grizzly attack on a human often ends in death. The bears slash with long claws, bite with powerful jaws, and push prey down to ensure death. A grizzly bear may keep attacking a person long after they stop being a threat.
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Kamchatka Brown BearScience MedicineSize:The Kamchatka brown bear is a large brown bear subspecies. It reaches a maximum weight of 1,433 lbs (650 kg) and a height of 10 feet (3 meters).
Location:The Kamchatka brown bear exists in the Anadyrsky District of the Former Soviet Union. Subspecies are also found on Saint Lawrence Island in the Bering Sea.
Distinguishing Features: Nearly all Kamchatka brown bears show brown coloring, matching the name. Their fur can have a violet tint, though light-colored individuals are rare.
Why You Should Be Scared:Kamchatka brown bears are huge carnivores. They usually do not attack humans, but they are deadly if they do. Like other brown bear species, they guard their territory and cubs fiercely. Do not wander into their den or try to take a cub.
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Kodiak BearScience MedicineSize:Kodiak bear adults can weigh up to 1,500 lbs (680 kg).
Location:They live on the islands of the Kodiak Archipelago in Southwest Alaska.
Distinguishing Features: Kodiak bears are huge; they rank second as the world's largest bears. They have light-brown, shaggy hair and some call them the Alaskan brown bear.
Be scared because of this.Kodiak Bears avoid people when they can. They prefer fishing in local streams, staying as far from people as possible. Some people get too close. These bears are not the most aggressive globally, but they will attack a human who approaches. About one serious injury happens each year from a Kodiak bear attack.
Also ranks #2 on Best Animals That Start With K, Ranked
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Himalayan Brown BearScience MedicineSize:They reach heights between 6 and 7 feet (1.8 and 2.2 meters).
Location:They live in Northern Afghanistan, Northern Pakistan, Northern India, west China, and Nepal.
Distinguishing Features: Himalayan brown bears have short, light-brown fur covering their bodies. Habitat loss and poaching put these small bears at critical danger.
Why You Should Be Scared:Many people think the Himalayan brown bear started the Yeti legend. The Nepalese name "Dzu-Teh" links the bear to the Abominable Snowman. Though small, these bears become deadly when cornered or when their habitat faces danger, just like other bears on this list.
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American Black BearScience MedicineSize:Black bears weigh between 90 and 550 lbs (41 to 250 kg).
Location:They live throughout most of North America.
Distinguishing Features: American black bears look like grizzly bears but have a black coat, which gives them their name. Subspecies create a color range from light brown to jet black.
Why You Should Be Scared:Black bears usually keep humans away. Their size and weight give them an easy advantage in any human/bear encounter, but they stay isolated. They become dangerous if their cubs or den face threats. Black bears are smart and humans often train them. They can serve as guard animals, intimidating those who approach, and stopping anyone who gets too near.
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Asian Black BearScience MedicineSize:Their average size is about 300 lbs (136 kg), standing 75" (190 cm) tall.
Location:They inhabit the Himalayas, the northern Indian subcontinent, Korea, northeastern China, the Russian Far East, the Honshū and Shikoku islands of Japan, and Taiwan.
Distinguishing Features: Asian black bears are black, showing a white V-shaped marking on their chests, similar to Batman's logo.
Why You Should Be Scared:Asian black bears usually stay shy and cautious around people. They become aggressive if threatened, showing more aggression than other brown bear species across Eurasia. These animals can become savage and vicious, easily killing a human when threatened.
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Sloth BearScience MedicineSize:These bears measure 270 to 420 lbs (124 to 192 kg) and stand up to 6.2 feet (1.9 meters).
Location:They live in the Indian Subcontinent, and an isolated subspecies exists in Sri Lanka.
Distinguishing Features: Sloth Bears have black, shaggy hair and a lightened muzzle. Rudyard Kipling's Baloo took inspiration from the sloth Bear in 'The Jungle Book'.The Jungle Book.
Why You Should Be Scared:Sloth bears usually remain docile and often get trained for tasks. However, they become highly territorial and attack any human who gets too near their area. This makes them deadly. Sloth bears lash out with long claws, which can severely injure anyone caught in the bear's deadly swipe.
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Malayan Sun BearScience MedicineSize:They weigh 60 to 176 lbs (27 to 80 kg), making them relatively small bears.
Location:Tropical Forests of Southeast Asia.
Distinguishing Features: The Malayan sun bear is called the 'honey bear' because it loves honeycombs and honey. These bears are usually black with a brown fur collar on their chest and under their neck.
Why You Should Be Scared:Malayan sun bears do not usually attack people. Their small size makes people think they are less dangerous than they are. Sun bears have long claws and teeth that become powerful weapons when the bear feels threatened.
Also ranks #3 on The Craziest Tongues In Nature
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Panda BearScience MedicineSize:Adult sun bears average about 250 lbs (115 kg).
Location:South Central China.
Distinguishing Features: Panda bears show easy identification through their black and white coloring. They often have black ears and a dark patch around their eyes. These bears love bamboo, which makes up nearly all their food, so they often live near tall grass.
Why You Should Be Scared:Pandas are calm and playful bears. Yet, they will aggressively attack anyone who gets too close. They are unpredictable, so never approach one in the wild. Pandas protect their young like most bears, though not as aggressively as some on this list.
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