It is that even to this day bears have short tails, hibernate all winter, and have no love at all for fox.

这就是为什么即使现在熊也只有短短的尾巴，整个冬天都冬眠，而且一点也不喜欢狐狸。

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Some animals such as bears, frogs and snakes, sleep all winter.

有些动物整个冬天都在睡觉，如熊、青蛙和蛇。

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Heart rate tracking for three of the Alaska bears showed a drop from 55 beats per minute on average before hibernation to 14 erratic ones per minute in winter.

对三头阿拉斯加的黑熊的心率追踪显示出它们在冬眠前的平均每分钟 55 下降低到了冬天里每分钟飘忽不定的 14 下。

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Caves were essential for these Ice Age bears to hibernate during the winter months.

BBC: Early human 'squatters' drove cave bears to extinction

Rolland can trap anything - wolves are the biggest challenge, and he took 23 of those alive last winter - but today he is looking for bears. he drives out to a popular spot where bears congregate. he has brought a bait box with him, from which he pulls out, rather unexpectedly, a slab of cake.

BBC: Qu��bec's wood runners

Two of the trips are in June, when bears are busy stuffing themselves after their winter hibernation.

BBC: Ten weekends in Europe's great outdoors