Grizzly bear vs Brown bear Best 10 Main Differences Explained

Grizzly bear vs Brown bear

The grizzly bears tend to be the subspecies of the brown bears, ursus arctos horribilis, one of the eight bear species, present in mountain slopes, alpine meadows, and isolated parts of the northwestern United States, etc. The people considered these bears a separate subspecies from the true grizzly. The grizzly bears live in various habitats, such as woodlands, prairies, forests, rivers, and streams. The grizzly bears may be black, lighter brown, or dark brown.

The grizzly bear possesses long claws, rounded ears, darker legs, and duller upper parts. They have fur ranging from black to cream or silver color. The grizzly bear muscles are a prominent shoulder hump between the front shoulders. The adult grizzly bears possess a body size of 1.68 to 2.44 meters. The female grizzly bears are more light-weight than male bears. The adult grizzlies are also referred to as umbrella species. 

On the other hand, the brown bears, being the dominant bear species, also refer to the species ursus arctos. The name brown bear was once referred to as the species ursus arctos. Many other brown bears, including the coastal brown bears and Kodiak bears, are present. The American black bears with the scientific name Ursus americanus are the widely distributed bears in North America. The Kodiak bear reaches sexual maturity at the age of five tears.

The brown bears are closely related to other bears, such as the polar bear. The brown bear country includes western Canada, the northern hemisphere, North America, all parts of Middle East, etc. The brown bears possess curved claws and are identified by their hind legs. The adult brown bears weigh about 1000 pounds. The adult males are much larger than the adult females. Most bears are active in the early summer and evening. 

Although the female bear has cubs accompanying her for up to two years, the male bears roam as individual bears. Although both brown bears and grizzlies are similar, differences also exist. For example, both belong to the same species, ursus arctos. However, the grizzlies are called inland brown bears. All grizzly bears are brown bears, but not all brown bears are grizzly bears.

Grizzly bear vs Brown bear

These bears stand on the top of Brooks falls, waiting for sockeye salmon to jump enough to catch in their mouths. Both bears are considered species of least concern, and their population is decreasing due to habitat loss. If you are visiting the

Yellowstone national park, you vacation is not complete, until you see the bears. There is other wildlife in the national park service to entertain people loving animals. Despite these facts, people still confuse these species. There is no need to worry as this blog post has provided other exciting facts and information about these animals, as mentioned below;

Grizzly bear

Brown bear

  • The grizzly bears are large animals ranging in color from dark brown to light tan (almost white). There are short, rounded ears, a large shoulder hump, and a dished face. A mass of muscles gets attached to the backbone of bears at a hump, giving these bears additional strength for digging. 
  • The brown bears possess a long snout, rounded ears, a slight hump over their shoulders, and big paws with, long, curved claws for digging. Although the color of these animals varies from black to a light creamy shade, these are giant creatures, usually dark-brown-colored. 
  • The grizzly bears are present in various countries worldwide, including western Canada, Washington, Montana, Southern Colorado, Wyoming, Alaska, Idaho, etc. In addition to this, these bears are also native to habitats such as prairies, alpine meadows, woodlands, and forests. They also prefer riparian habitats i.e., along streams and rivers. 
  • The brown bears are also present in various countries throughout the world, including Romania, Poland, Ukraine, Slovakia, Western Europe, Japan, Northwest Africa, Eastern Siberia, Palestine, and the Himalayan region. In addition to this, they are native to various habitats, such as ice fields, high mountain forests, fringes of deserts, mountain woodlands, etc. 
  • The grizzly bears possess a body length of about 2 meters, with the height of approximately 1 meter. The hind foot length is about 11 inches or 28 centimeters. The adult female grizzly bear weighs 290 to 400 pounds, while the adult males are with weight 400 to 790 pounds. 
  • The adult brown bears possess a body length (including head) of about 1.4 to 2.8 meters and are about 70 to 150 centimeters at the shoulders. These animal species can weigh approximately between 150 and 200 pounds at the end of their life’s first year. However, the average weight is 80 to 600 kilograms. 
  • The grizzly bears require a proper diet to survive. For example, their primary diet includes forbs, berries, fleshy roots, grasses, fruits, fish, carrion, caribou, moose, elk, squirrels, and other animals. They also eat road-leaved herbs, tubers, sedges, insects, marmots, deer, bison, mice, etc. 
  • The brown bears also need proper food to survive, like other animals. For instance, they eat small mammals, fish, berries, and mixed diet of plants. In addition to all these facts, the brown bear possesses long and strong claws that they use to dig for food, pick fruits, and catch prey. 
  • The grizzly bears use various smells, movements, and sounds to communicate with each other. These bears grunt, growl, or moan during mating season when males fight with each other struggling for the opportunity to mate with females or when the female grizzly bears are communicating with their young ones. 
  • The brown bears communicate with each other using sound and smell only, unlike grizzly bears. The brown bear makes moaning noises sometimes, it is foraging. These animals rub or scratch on landmarks and other trees, warning other bears about their boundaries. They also communicate by marking trees with scents. 
  • The grizzly bears are curious, intelligent, and have an excellent memory regarding the places where food is available. They used to have excellent senses of smell and hearing and a good eyesight. In addition to it, these bears are active during the night and day, often altering their habits, avoiding humans in high human use areas. 
  • Most adult brown bears are crepuscular, meaning they are more active in the early morning and evening. The bears living near human areas are nocturnal, while the young brown bears are active during the day. In addition to it, the adult brown bear is a solitary animal species, except for gatherings at fishing spots or females with cubs. 
  • Research has shown that grizzly bears do not hibernate. However, they enter a torpor state, which is a mild form of hibernation. The heart rate of these creatures slows to about 8 to 19 beats per minute, and their body temperature dips to almost 30 and 35 degrees Celsius. 
  • The brown bears love spending the winter hibernating in their dens, avoiding the lack of abundant food sources and the cold weather. However, the bodies of these bears drop in respiration, pulse rate, and body temperature during their winter slumber. 
  • The grizzly bears live for a specific time, after which they die. For example, they live for almost 30 years in the wild and for 44 years in captivity. But most of these bears die at the age of 25 years. 
  • The brown bears also live for a specific time, like other animal species, after which death occurs. For instance, these bears live for about 20 to 30 years in the wild but for almost more than 40 years in captivity.
  • Many animals prey on grizzly bears, including cougars and humans. However, there are no predators or natural enemies in the wild. 
  • The brown bears also have many predators, like grizzly bear species and other animals. The primary predators are a cougar, wolves, and humans. 
  • According to International Union for Conservation of Nature, grizzly bears are considered the animals of least concern. These bears are currently protected as threatened species in the lower 48 states. 
  • According to the International Union for Conservation of Nature, brown bears are also considered species of least concern, like grizzly bear animals. However, the population is declining due to habitat loss. 


Sometimes people get confused and raise questions about grizzly bears vs brown bears to clear their minds. Therefore, the answers to some of those questions are as mentioned below;

Are grizzly bears more aggressive than brown bears?

The grizzly bears are smaller and more aggressive than brown bears because of the difficulty in finding a great amount of food. Despite it, polar bears are further considered more aggressive than grizzly bears.


Various plants and animals are present worldwide, all possessing unique identification characters discriminating against them. The same is the case with grizzly bears and brown bears. Although both are similar, differences also exist. But people still confuse them. There is no need to worry as this blog post provides exciting facts and information about these creatures to make people’s minds clear. It will help greatly if you read this article with great care and pay full attention. 

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