Wild Grizzly Bear Videos

Grizzly Bears in Nature

No Grizzly Bears Here! »

Spring Grizzly Cubs Looking Good into their 3rd Year »

Rambunctious Spring Grizzly Bear Cubs »

3 Year Old Grizzly Male Hanging in There »

An Amazing Grizzly Family Today and as Newborns »

Beautiful Spring Grizzly Bear Family »

Big Beautiful Grizzly Sow First Sighting this Year »

Biggest Beautiful Grizzly Sow »

Biggest Grizzly Bear Boar Seen this Year Happy with Eating Greens for Now »

Biggest Grizzly Mum Shows Up with Newborn Cubs »

Biggest Grizzly Seen in the Area So Far »

Big Grizzly Bear Boar Feeding on Moose Bull Carcass »

Big Grizzly Bear Feeding on Moose Bull Carcass »

Big Grizzly Mum and Spring Cubs on the Hunt for Protein »

Big Grizzly Mum Pretty Face and Her Spring Cubs Appear at the Lake »

Care Free Spring Grizzly Bear Cubs »

First Sighting of Mature Grizzly Mum with New Offspring »

Great to See Grizzly Mum and Playful Yearlings Doing Well into Year 2 »

Grizzly Bear Cub Now Dealing with Life Alone »

Grizzly Bear Cubs Battle of Learning to Swim is Inescapable »

Grizzly Bear Grabs and Runs from a Moose Carcass »

Grizzly Bear Pair Wrestling on Front Lawn of Cabins »

Grizzly Bear Siblings Doing Well on Their Own »

Grizzly Bear Tension Rises as Mating Season Begins »

Grizzly Cubs Going for a Swim in Athabasca River »

Grizzly Family Feeds on Elk Carcass »

Grizzly Family Finds an Elk Carcass »

Grizzly Mum and Tiny Cubs Make Numerous Dangerous Highway Crossings »

Happy Grizzly Siblings or a Mating Pair »

Huge Mature Grizzly with Newborns »

Relocated Grizzly Family Gets Mixed Up with a Porcupine »

Tiny Spring Grizzly Bear Cubs First Exploration »

Wonderful Grizzly Family Makes Another Appearance »

30,000 Berries a Day Diet Grizzly Bear »

A Canadian Grizzly Bear Romance »

A Formidable Family Grizzly Mum and 3 Cubs »

Amazing Physical Appearance and Coat Color on Grizzly Bear »

Biggest Spring Grizzly in Alberta's Rockies So Far »

Big Grizzly Cubs as Newborns and Leaving Mum Today »

Big Grizzly Mum After Losing her Cub »

Cute Grizzly Cubs Learning to Climb »

Cutest Newborn Grizzly Bear Cubs Then and Now »

First Grizzly Family Encounter »

Full of Berries Satiated Grizzly Heads North »

Grizzly and Her Newborns First Sighting »

Grizzly Bear Boar on the Heals of Grizzly Family During Mating Season »

Grizzly Bear Family as Evening Approaches »

Grizzly Bear Mum with very Healthy Newborn Cub First Appears »

Grizzly Bears are on the Hunt for Berries Now »

Grizzly Bear Watches Hikers »

Grizzly Cub and Cub Cute Construction Co Demolition Services »

Grizzly Cub of the Year in Hyperphagia »

Grizzly Cubs of the Year Playing and Exploring Canada's Rockies »

Grizzly Family Hunting for Elk Babies »

Grizzly Mum and 2 Cubs of the Year in Canada's Rockies »

Grizzly Mum and Cubs Stalked by Black Bear Boar »

Grizzly Mum Leading her Tiny New Explorers out after their Hibernation Birth »

Grizzly Mum with Yearlings in a Grizzly Maze Cooling off in the Athabasca River »

Healthy Grizzly Family Crosses our Path »

New Grizzly Bear Mum with 3 Tiny Newborns Appear in the Grizzly Maze »

Rare Moments with an Amazing Grizzly Bear Family »

She's Got Moves Big Grizzly Bear Sow's Agility on the Hunt »

This Area's Most Adorable Grizzly Family Passing Through »

16 month Old Grizzly Cub Siblings Wrestling »

Adorable Grizzly Cub of the Year »

A Happy Grizzly Bear in Jasper, Alberta »

Back Country Grizzly Bear Family »

Big Grizzly Bear Mum with 3 Tiny Cubs »

Gentle Hazing of a Grizzly Bear with Cubs in a Canadian Park »

Grizzly Bear and Cubs Eating Elk Carcass 2 »

Grizzly Bear and Cubs Eating Elk Carcass »

Grizzly Bear Crossing Maligne River Middle of September »

Grizzly Bear Cub of The Year »

Grizzly Bear Cubs Clowning Around and Play Fighting »

Grizzly Bear Cub Siblings Demonstrate Very Capable Squabble Skills Over a Meal »

Grizzly Bear Cubs of the Year Charge Harassing Coyotes »

Grizzly Bear Cubs of the Year Horsing Around in Athabasca River »

Grizzly Bear Eating Lush Vegetation »

Grizzly Bear Family Eating Berries »

Grizzly Bear Family Eating in Canada's Beautiful Rocky Mountains »

Grizzly Bear Flipping Rocks for Insects »

Grizzly Bear in the Canadian Rockies Just Out of Hibernation »

Grizzly Bear Mother and 2 Year and a Half Old Cubs »

Grizzly Bear Mother and Cubs Eating Elk in Athabasca River »

Grizzly Bear Mother and Spring Cubs Eating an Elk in Athabasca River »

Grizzly Bear Mother Nurses Cubs of the Year along Athabasca River in the Canadian Rockies »

Grizzly Bear Mother with 2 Cubs of the Year in the Canadian Rockies »

Grizzly Bear Nurses Cubs of the Year »

Grizzly Bear on the Icefields Parkway in Spring »

Grizzly Bear Pulling Skin off Elk Kill »

Grizzly Bear Scares Bald Eagle off as it Approaches Kill Site then Bear Cubs Follow »

Grizzly Bears Mating in Canada's Rockies »

Grizzly Bear with Cubs Sighting in the Canadian Rockies »

Grizzly Cub Now on It' Own »

Grizzly Female in the Canadian Rockies »

Grizzly Mother and Cubs feeding on an Elk Carcass in Athabasca River »

Grizzly Mum and Cub in it's 3rd Year »

Grizzly Munching Machine in the Canadian Rockies »

Icefields Parkway Grizzly Bear »

Identifying Grizzly Bear Mothers in care of Cubs of the Year »

Is the Icefields Parkway Important Grizzly Bear Habitat »

Jasper Alberta Grizzly Bear Encounter »

Large Grizzly Bear in the Canadian Rockies Digging for Nutrients »

Large Male Grizzly Walking in Snow just out of Hibernation »

Male Grizzly in Late Spring using His Digging Tools »

Powerful Grizzly Bear Mother Chewing on Elk Leg Bone »

Very Sleepy Big Grizzly Bear in the Canadian Rockies »

Young Adult Grizzly Bear in the Rockies »

Grizzly Bears in Canada

Wild Grizzly Bears

Grizzly Bear - Brown Bear Species

Genetic science reveals the grizzly to be a subspecies of the brown bear (Ursus arctos). In North America, "brown bear" is also known as "grizzly bear", being all the same species, Ursus arctos.

Coastal grizzly bears are larger and darker than inland grizzlies. They were considered a different species from grizzlies at one time. Kodiak grizzly bears also were considered a distinct species. At that time there were five different species of brown bear, including these three in North America.

Grizzly Bear Size

Female grizzlies usually weigh 130–180 kg (290–400 lb), while adult male grizzly bears weigh on average 180–360 kg (400–790 lb). Female Grizzly Bear average weights would be 136 kg (300 lb) inland and 227 kg (500 lb) coastal. One study found that the average weight for an inland male grizzly bear was around 272 kilograms (600 pounds), and the average weight for a coastal male was around 408 kg (899 lb). Newborn grizzly bear cubs uausally weigh less than 500 grams (1.1 lb).

Grizzly Bear Fur Color

Although grizzlies color can be blond to nearly black, grizzly bear fur is usually brown with darker legs and commonly white or blond tipped fur on the flank and back.

Grizzly Bear Physical Characteristics

A large muscular hump exists on adult grizzly bear shoulders. Aside from the distinguishing hump, grizzly bears also have "dished in" face profiles with short, rounded ears.

Grizzly bear's rear end is lower than its shoulders, where as a black bear's rump is higher than its shoulders.

Grizzly bear's front claws are usually 2–4 inches in length, where as a black bear's claws measure about 1–2 inches in length.

Grizzly Bear Hibernation

Grizzly bears hibernate from 5 to 7 months each year unless they live in warm climates where they may not hibernate at all. During hibernation, female grizzly bears give birth and their offspring will consume milk from their mother for the remainder of the hibernation period.

Grizzly bears must consume an immense amount of food to prepare for hibernation. Bears can gain hundreds of pounds during the period just before hibernation called hyperphagia. In this period, grizzlies may consume up to 10 times the amount of calories compared to Spring and Summer.

Bears do not eat during hibernation. Grizzly bears do not defecate or urinate throughout the entire hibernation period. Male grizzly bears usually come out of hibernation in early to mid-March, while females emerge in April or early May.

Bears often wait for a snowstorm as a trigger to enter their den. This behavior reduces the chances that predators will find the den. Grizzly Bear dens are typically at elevations above 1,800 m (5,900 ft) on north-facing slopes.

Inland or Rocky Mountain grizzlies spend nearly half of their life in dens while coastal grizzly bears spend less time in dens. If food is very plentiful year round, grizzly bears may not hibernate at all.

Grizzly Bear Reproduction

Grizzly bears have one of the lowest reproductive rates of all land mammals in North America. Grizzly bears do not reach sexual maturity until they are at least five years old. After mating, females delay embryo implantation until hibernation, during which miscarriage can occur if the female is not in good enough condition. Female grizzly bears usually produce two cubs in a litter, with the mother caring for the cubs for up to two years before mating again.

Grizzlies are normally solitary animals, but in coastal areas, grizzlies gather around streams, lakes, rivers, and ponds during the salmon spawn. Females (sows) produce one to four cubs that are small and weigh only about 450 grams (1 lb) at birth. Unfortunately, most grizzly bear cubs do not make it through their first year due to many factors.

Grizzly Bear Lifespan

The average lifespan for a grizzly boar is estimated at 22 years, with sows living slightly longer at 26.

Females live longer than males due to their less dangerous life, as they do not fight during mating season like boars do. The oldest known wild inland grizzly was about 34 years old(Alaska), with the oldest known coastal bear being 39. Captive grizzlies have been known to live as long as 44 years.