The largest bears are found on the west coast of British Columbia, Alaska, and on offshore islands along coastal Alaska, such as Kodiak and Admiratly. There, males average weight is 660 pounds and females over 440 pounds. Brown bears from the interior ranges of North America, Europe, and the subArtic are roughly two-thirds the size of their Alaskan and Kamchatkan cousins. Brown bears occupy a wide range of habitats including dense forests, aubalpine mountain areas, and tundra. They were once abundant on the central plains of North America, but have since been exterminated.
Brown bears are the widest species in the world.
They are found in local populations in eastern and western Europe, across northern Asia and in Japa. In North America, brown bears are found in western Europe Canada, Alaska, and in the states of Wyoming, Montana, Idaho, and Washington. Males may become sexually mature at a similar age but are probably not large enough to be able to enter the breeding population until they are eight to ten years old. Mating takes place from early May to the middle of July but implantation does not occur until about October or November. The young are born from about January to March.