![]() Every bear spends some of its summer scouting a safe and comfortable den location.ĭuring hibernation, brown bears do not eat, drink, urinate, poop, or leave their den. ![]() These winter dens can range from rocky caves to hollows under rotted tree roots. Bears survive by retreating to the safety of their dens. As temperatures drop, food becomes scarcer. “As they prepare for hibernation, bears are actually preparing to avoid winter famine, not cold weather,” says Fitz. ![]() ![]() But when the salmon swim up the river to spawn each summer, the bears focus on consuming as many fish as possible. Katmai’s brown bears often eat only the fattiest parts of the salmon-the brain, eggs, and skin-and leave behind the fleshier bits humans typically prefer.Īll spring, the bears munch on plants, insects, and small mammals. For bears, gaining body fat is the key to their winter survival.
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