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However, the bears are sometimes active during cold winter weather for reasons which are not entirely clear. [10] Cantabrian brown bears in captivity at Cabárceno. Man-made infrastructures such as roads and railways inhibit the population growth of the Cantabrian brown bear.
Grizzly bears also do not defecate or urinate throughout the entire hibernation period. The male grizzly bear's hibernation ends in early to mid-March, while females emerge in April or early May. [53] In preparation for winter, bears can gain approximately 180 kg (400 lb), during a period of hyperphagia, before going into hibernation. [54]
If the winter is mild enough, they may wake up and forage for food. Females also give birth in February and nurture their cubs until the snow melts. [90] During winter, American black bears consume 25–40% of their body weight. [91] The footpads peel off while they sleep, making room for new tissue.
The brown bear's winter fur is very thick and long, especially in northern subspecies, and can reach 11 to 12 cm (4.3 to 4.7 in) at the withers. The winter hairs are thin, yet rough to the touch. The summer fur is much shorter and sparser, with its length and density varying among geographic ranges. [50]
Overall, the Climate Prediction Center, in its most recent winter forecast, said that despite the current eastern chill, a milder-than-average winter was still likely for the eastern and southern U.S.
Winter brings less daylight and colder temperatures, which can disrupt sleep. Seasonal Affective Disorder (SAD) is more common in winter due to the lack of sunlight, causing sleep disturbances.
Bears use shelters, such as caves and logs, as their dens; most species occupy their dens during the winter for a long period of hibernation, up to 100 days. Bears have been hunted since prehistoric times for their meat and fur; they have also been used for bear-baiting and other forms of entertainment, such as being made to dance.
Freeze watches and cold advisories extend to northern Florida and southeast Georgia. Weather forecast for Saturday, Dec. 21, 2024, into Sunday, Dec. 22, 2024. First day of winter is here: Snow and ...