4 months 5 lbs. Bear (Female) Bear (Male) Age Weight Age Weight New born 8 ounces New born 8 ounces 4 months 5 lbs. Females are about 20% smaller, and 30% lighter than males. Robert Neubecker. 20-years 275 lbs. Weight: About 400 to 1200 pounds for males. They weigh up to 1,500 pounds. Females weigh about 300 to 800 pounds. Cubs are born in the den during January or February. The oldest known wild Kodiak bear was a 34-year-old sow. Males are about 30% larger than females. World record brown bear: (see Grizzly Bear). The oldest boar was 27. [2] How much does a brown bear weigh? The species is distributed across abundant of northern Eurasia and North America. Clyde, a Kodiak brown bear, weighed 2,130 pounds at the time of his death in 1987 at the Dakota Zoo in Bismarck, N.D. On average a newborn black bear cub weighs little more than 10.5 ounces (300 g) and is 9 inches (23 cm) long. Brown bear size is highly variable, depending both on subspecies and food availability. FACTS ABOUT BROWN BEAR. The weight of a brown bear depends on the sex of the animal. 8-years 150 lbs. Photograph: US National Park Service/Reuters G u a r … Thank you for visiting our new website! Bear, it’s what for dinner. Size: Length is 6 to 9 feet long for males. While there is generally much variation in size between brown bears in different areas, most usually weigh between 115 and 360 kg (254 and 794 lb). 1 year 70 lbs. Brown bear 747 stands in a river hunting for salmon to fatten up before hibernation in Alaska on 20 September. 1-year 50 lbs. An average-sized bear might range from 5 to 8 feet in length and weigh 700 pounds, however, much smaller and much larger specimens occur. The average weight of a bear of various species ranges from 150 kg to one ton. 4-years 125 lbs. He was 22. The Kodiak bear, on the other hand, commonly reaches sizes of 300 to 600 kg (660 to 1,320 lb), and has even been known to exceed weights of 680 kg (1,500 lb). Many people in North America use the common name “grizzly bear” to refer to the smaller and lighter-colored bear that occurs in interior areas and the term “brown bear” to refer to the larger and typically darker-colored bear in coastal areas. 20-years 150 lbs. The brown bear could be a massive bear with the widest distribution of any living ursine. Bears who eat lots of salmon put on weight quickly. 4 year 150 lbs. Females about 5 to 8 feet long. Females have more modest parameters, their weight ranges from 120 to 150 kg. A year prior to his death, zookeepers estimated his weight … The grizzly bear is a kind of brown bear. Brown bear and polar bear cubs are marginally larger, about 17.5 to 28 ounces (500-800 g) in weight and 12 inches (30 cm) in length. Weight depends on where they live and diet. 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