From WikiGrizzly bears are North America’s second largest land carnivore, after the polar bear. Size and weight varies greatly according to geographic location. Inland bears, particularly those of the Yukon region, may weigh as little as 300 lbs (136 kg) for adult males. The largest populations are found in coastal areas where weights are typically 500-750 lbs (225–420 kg). Populations found in Katmai National Park and the Alaskan Peninsula may approach or just exceed 1000 lbs (450 kg), indeed some specimens rival the Kodiak bear in size and weight. The females are on average 38% smaller, at about 250–450 pounds (114–160 kg), an example of sexual dimorphism. On average, grizzly bears stand about 1 meter (3.3 ft) at the shoulder when on all fours and 2 meters (6.6 ft) on their hind legs, but males often stand 2.44 meters (8 ft) or more on their hind legs. On average, grizzly bears from the Yukon River area are about 20% smaller than typical grizzlies. Formerly, taxonomists listed brown and grizzly bears as separate species. The Grizzly is classified as a Brown Bear subspecies, Ursus Arctos Horribilis. The term “brown bear” is commonly used to refer to the members of this subspecies found in coastal areas where salmon is the primary food source, but in fact, these are just coastal grizzlies in contemporary taxonomic classification. Inland bears and those found in northern habitats are more often called “grizzlies.” Brown bears on Kodiak Island are classified as a distinct subspecies from those on the mainland because they are genetically and physically isolated. The shape of their skulls also differs slightly.
Now, you to can also beat a bear.
[youtube:1pnd1x1t]<object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/8I2KLciiMYg&color1=0xb1b1b1&color2=0xcfcfcf&hl=en_ US&feature=player_embedded&fs=1"></param><param name="allowFullScreen" value="true"></param><param name="allowScriptAccess" value="always"></param><embed src="http://www.youtube.com/v/8I2KLciiMYg&color1=0xb1b1b1&color2=0xcfcfcf&hl=en_ US&feature=player_embedded&fs=1" type="application/x-shockwave-flash" allowfullscreen="true" allowScriptAccess="always" width="425" height="344"></embed></object>[/youtube:1pnd1x1t]