1
00:00:06,297 --> 00:00:11,261
‪NETFLIX 纪录片系列

2
00:00:20,145 --> 00:00:23,898
‪行走在地球上最强大的掠食者

3
00:00:27,277 --> 00:00:29,821
‪但要登上顶峰需要的…

4
00:00:35,076 --> 00:00:36,703
‪不仅仅是蛮力

5
00:00:38,288 --> 00:00:40,123
‪凭借非凡的脑力

6
00:00:41,291 --> 00:00:44,210
‪并最大限度利用地所有机会

7
00:00:45,837 --> 00:00:49,883
‪熊统治着地球上一些
‪生存环境最残酷的土地

8
00:00:55,013 --> 00:00:58,641
‪但幼崽并不是天生就具备生存的技能

9
00:01:00,894 --> 00:01:02,395
‪它们需要被教导

10
00:01:04,814 --> 00:01:08,109
‪所以熊妈妈要做的工作就是

11
00:01:08,193 --> 00:01:09,736
‪让幼崽准备好

12
00:01:09,819 --> 00:01:11,571
‪面对这个世界

13
00:01:18,912 --> 00:01:22,165
‪剧名：熊

14
00:01:24,292 --> 00:01:28,379
‪（美国 马萨诸塞州）

15
00:01:32,425 --> 00:01:34,636
‪被冬天的冰冻笼罩着

16
00:01:36,471 --> 00:01:37,972
‪北部的森林

17
00:01:38,932 --> 00:01:39,849
‪像是定格了一般

18
00:01:42,143 --> 00:01:43,103
‪寂静无声

19
00:01:44,854 --> 00:01:46,648
‪没有迹象表明

20
00:01:48,149 --> 00:01:50,068
‪一头巨熊

21
00:01:50,860 --> 00:01:53,404
‪藏在积雪下睡觉

22
00:02:02,288 --> 00:02:03,748
‪呼吸缓慢

23
00:02:09,379 --> 00:02:11,881
‪心跳每分钟只有八次

24
00:02:15,301 --> 00:02:17,137
‪自秋天以来就没有东西吃

25
00:02:19,973 --> 00:02:21,349
‪三个月以来

26
00:02:21,933 --> 00:02:25,603
‪这头美洲黑熊一直处于冬眠状态

27
00:02:29,858 --> 00:02:31,317
‪更为神奇的是…

28
00:02:34,529 --> 00:02:36,239
‪三周前

29
00:02:36,322 --> 00:02:39,993
‪它醒来的时间刚好足够

30
00:02:40,660 --> 00:02:41,911
‪生下三只幼崽

31
00:02:48,835 --> 00:02:52,630
‪每只幼崽只有一罐汤那么重

32
00:03:00,889 --> 00:03:04,267
‪虽然它只能靠脂肪储备生存

33
00:03:05,059 --> 00:03:06,978
‪但它的宝宝不会挨饿

34
00:03:09,689 --> 00:03:11,191
‪它的乳汁非常充足

35
00:03:12,358 --> 00:03:14,319
‪以至于幼崽的体型
‪已经是原来的两倍大

36
00:03:19,365 --> 00:03:22,994
‪同样的故事正在北美洲各地上演

37
00:03:25,496 --> 00:03:28,666
‪超过50万头正在冬眠的黑熊

38
00:03:29,626 --> 00:03:30,710
‪要么藏在地下

39
00:03:32,921 --> 00:03:35,340
‪或者窝在倒下的树底

40
00:03:38,009 --> 00:03:40,887
‪难以置信的是 有些就在露天环境里

41
00:03:46,476 --> 00:03:50,730
‪幼崽紧紧依偎在一起
‪靠着妈妈的温暖存活

42
00:03:56,945 --> 00:03:58,363
‪但这位妈妈

43
00:03:58,446 --> 00:04:01,199
‪选择了最舒适的巢穴

44
00:04:08,706 --> 00:04:10,708
‪当春天最终到来时

45
00:04:11,459 --> 00:04:13,336
‪它艰难的工作就会开始

46
00:04:16,506 --> 00:04:18,049
‪一头熊的成长环境

47
00:04:18,758 --> 00:04:20,843
‪会决定它的一生

48
00:04:27,558 --> 00:04:30,228
‪地球上只有八种熊

49
00:04:36,693 --> 00:04:39,153
‪分布在从亚洲丛林

50
00:04:39,904 --> 00:04:42,198
‪到北极冰原地区

51
00:04:44,450 --> 00:04:46,869
‪有些熊小得惊人

52
00:04:46,953 --> 00:04:48,496
‪体型只有一条狗那么大

53
00:04:49,205 --> 00:04:52,709
‪其他熊的体重则接近900公斤

54
00:04:55,461 --> 00:04:58,172
‪虽然所有熊都被归为食肉动物

55
00:04:58,256 --> 00:05:01,092
‪但大多数熊能吃到什么就吃什么

56
00:05:03,970 --> 00:05:07,557
‪但如何在合适的时间找到合适的食物

57
00:05:08,182 --> 00:05:10,685
‪只能由尽职的母亲教授

58
00:05:13,062 --> 00:05:15,815
‪每头熊在自己的家园都面临挑战

59
00:05:22,113 --> 00:05:24,407
‪所以 学会使用脑力

60
00:05:24,490 --> 00:05:26,117
‪和体力

61
00:05:27,493 --> 00:05:29,370
‪对于生存而言至关重要

62
00:05:39,213 --> 00:05:40,590
‪北极的冬天

63
00:05:43,926 --> 00:05:44,886
‪一片肃杀

64
00:05:47,221 --> 00:05:48,181
‪死气沉沉

65
00:05:50,516 --> 00:05:51,768
‪不过

66
00:05:51,851 --> 00:05:53,144
‪也并不完全如此

67
00:05:53,686 --> 00:05:58,316
‪（挪威 斯瓦尔巴）

68
00:06:13,122 --> 00:06:15,124
‪即使在零下40度

69
00:06:15,917 --> 00:06:17,752
‪北极熊的保温性能也很好

70
00:06:18,669 --> 00:06:20,380
‪它外有一层皮毛

71
00:06:20,963 --> 00:06:23,925
‪内有一层
‪像男人胳膊那么粗厚的脂肪毯

72
00:06:29,722 --> 00:06:32,225
‪北极熊永远不用冬眠

73
00:06:33,142 --> 00:06:35,812
‪冬天是它们狩猎的季节

74
00:06:39,524 --> 00:06:41,651
‪海豹是它们最喜欢的猎物

75
00:06:42,819 --> 00:06:46,697
‪北极熊利用它们惊人的嗅觉

76
00:06:46,781 --> 00:06:49,450
‪探测距离遥远的海豹

77
00:06:56,916 --> 00:06:59,127
‪这头雄性北极熊闻到了一股气味

78
00:06:59,919 --> 00:07:01,921
‪但那不是猎物

79
00:07:03,631 --> 00:07:05,425
‪而是其他熊

80
00:07:10,555 --> 00:07:14,767
‪众所周知 雄性北极熊会杀死
‪非自己所生的幼崽

81
00:07:17,478 --> 00:07:20,648
‪这头妈妈年轻但接近成年的幼崽

82
00:07:20,731 --> 00:07:22,191
‪并不怎么娇弱

83
00:07:23,609 --> 00:07:24,569
‪不过

84
00:07:24,652 --> 00:07:26,487
‪最好还是保持距离

85
00:07:31,868 --> 00:07:34,078
‪在能够自力更生之前

86
00:07:34,162 --> 00:07:36,914
‪它们需要完善自己的狩猎技能

87
00:07:41,794 --> 00:07:43,880
‪这可能是

88
00:07:44,881 --> 00:07:47,717
‪妈妈的一次授课机会

89
00:08:05,067 --> 00:08:06,652
‪迎风接近

90
00:08:09,071 --> 00:08:10,656
‪使用伪装

91
00:08:15,661 --> 00:08:17,538
‪潜入攻击范围

92
00:08:58,287 --> 00:09:00,206
‪经过每次成功的狩猎

93
00:09:00,289 --> 00:09:02,833
‪妈妈都会帮助它的幼崽变得更强壮

94
00:09:02,917 --> 00:09:04,126
‪更聪明

95
00:09:07,380 --> 00:09:11,175
‪一旦幼崽离开妈妈 这些课程将会

96
00:09:11,759 --> 00:09:13,844
‪决定生死

97
00:09:22,728 --> 00:09:26,941
‪（美国 马萨诸塞州）

98
00:09:27,900 --> 00:09:31,237
‪熊从离开巢穴那天起
‪就开始向妈妈学习

99
00:09:41,872 --> 00:09:45,001
‪春天终于来到黑熊一家门前

100
00:09:46,460 --> 00:09:49,213
‪大自然正在召唤它们

101
00:09:55,136 --> 00:09:59,056
‪熊妈妈自秋天以来
‪减掉了超过45公斤的脂肪

102
00:09:59,807 --> 00:10:01,475
‪几乎是它体重的一半

103
00:10:02,059 --> 00:10:03,978
‪所以它已经准备好开始行动了

104
00:10:06,564 --> 00:10:09,025
‪但幼崽吃饱喝足

105
00:10:09,108 --> 00:10:12,445
‪似乎不那么着急

106
00:10:18,993 --> 00:10:21,329
‪这是一个全新的世界

107
00:10:23,914 --> 00:10:26,000
‪攀登是与生俱来的技能

108
00:10:27,126 --> 00:10:30,504
‪即便如此
‪这条路还是有点像障碍赛道

109
00:10:48,648 --> 00:10:50,149
‪从第一次跨栏开始…

110
00:10:52,401 --> 00:10:53,819
‪妈妈就支持着它们

111
00:10:57,573 --> 00:10:59,825
‪它自己既是供养者

112
00:10:59,909 --> 00:11:02,203
‪也是教导者和保护者

113
00:11:04,497 --> 00:11:06,332
‪责任重大

114
00:11:07,083 --> 00:11:10,294
‪大约有三分之一的幼崽活不过第一年

115
00:11:17,093 --> 00:11:19,470
‪它们会面临的一个最大危险

116
00:11:20,388 --> 00:11:21,889
‪就是其他熊

117
00:11:22,390 --> 00:11:26,769
‪（美国 阿拉斯加州）

118
00:11:30,564 --> 00:11:33,943
‪棕熊 有时被称为灰熊

119
00:11:34,026 --> 00:11:36,862
‪已经从山上的冬穴下来

120
00:11:39,156 --> 00:11:42,493
‪它们聚集在沿海的草地上吃莎草

121
00:11:44,412 --> 00:11:48,249
‪熊不像猫科动物或犬科动物那样
‪保卫自己的领地

122
00:11:49,291 --> 00:11:51,544
‪但是它们仍然知道谁是老大

123
00:11:56,590 --> 00:11:59,051
‪这头年老的雄性霸主

124
00:11:59,135 --> 00:12:02,513
‪多年来一直对这片牧场拥有主权

125
00:12:10,479 --> 00:12:12,440
‪它需要增加体重

126
00:12:13,649 --> 00:12:16,444
‪这样繁殖季节到来时 它才能和任何

127
00:12:16,527 --> 00:12:18,612
‪敢于挑战自己的棕熊对抗

128
00:12:28,831 --> 00:12:32,585
‪这片草的肌肉发育蛋白含量高得惊人

129
00:12:37,631 --> 00:12:40,676
‪但如果你比一般熊更聪明

130
00:12:40,760 --> 00:12:43,471
‪就能找到更多富含营养的食物

131
00:12:50,311 --> 00:12:52,855
‪这位妈妈要带自己的幼崽

132
00:12:52,938 --> 00:12:56,150
‪享受一次独一无二的的进餐体验

133
00:13:03,365 --> 00:13:06,827
‪泥泞的海滩可能看起来荒凉贫瘠

134
00:13:13,042 --> 00:13:14,835
‪但是稍微挖掘一下

135
00:13:14,919 --> 00:13:16,879
‪就能发现下面的宝藏

136
00:13:23,219 --> 00:13:24,970
‪一旦找到一只蚌蛤

137
00:13:25,805 --> 00:13:27,556
‪就需要去壳

138
00:13:28,432 --> 00:13:30,726
‪这是一项出奇精细的操作

139
00:13:36,607 --> 00:13:38,776
‪不是所有的熊都有这个本事

140
00:13:40,069 --> 00:13:42,112
‪它是从自己妈妈那里学来的

141
00:13:43,155 --> 00:13:45,074
‪现在它要传授下去

142
00:13:50,204 --> 00:13:51,455
‪退潮时

143
00:13:51,539 --> 00:13:55,084
‪有天赋的蚌蛤捕手
‪可能收获100只味鲜肉美的小食

144
00:14:00,923 --> 00:14:02,925
‪这比起在同一时间吃草

145
00:14:03,008 --> 00:14:05,469
‪能获取更多蛋白质

146
00:14:10,766 --> 00:14:14,979
‪教授女儿本领 就能使它在
‪竞争激烈的世界中占得先机

147
00:14:34,373 --> 00:14:35,416
‪一头陌生的棕熊

148
00:14:39,378 --> 00:14:40,671
‪还是撤退吧

149
00:14:43,799 --> 00:14:45,342
‪又一节重要的课程

150
00:14:46,051 --> 00:14:48,637
‪尽量避免对抗

151
00:14:51,849 --> 00:14:55,060
‪愤怒的熊有着山崩地裂的力量

152
00:15:08,741 --> 00:15:10,451
‪即便对手体型更大

153
00:15:11,160 --> 00:15:12,995
‪也绝对招架不住熊

154
00:15:15,831 --> 00:15:17,791
‪或它的爪子

155
00:15:19,460 --> 00:15:22,838
‪熊爪长达10厘米 是极其可怕的武器

156
00:15:25,758 --> 00:15:28,719
‪但它们也是多用途工具

157
00:15:30,137 --> 00:15:31,430
‪攀爬钉

158
00:15:33,557 --> 00:15:34,683
‪铁铲

159
00:15:35,517 --> 00:15:36,769
‪冰钩

160
00:15:37,645 --> 00:15:39,313
‪甚至是镀银餐具

161
00:15:41,857 --> 00:15:44,193
‪需要好好抓痒的时候

162
00:15:45,986 --> 00:15:47,404
‪什么都比不上自己的爪子

163
00:15:49,698 --> 00:15:51,533
‪有些最长的爪子

164
00:15:51,617 --> 00:15:53,953
‪长在体型最小的熊身上

165
00:15:56,163 --> 00:15:58,916
‪虽然大小只是棕熊的十分之一

166
00:15:58,999 --> 00:16:03,003
‪马来熊却是丛林生存方面的专家

167
00:16:03,921 --> 00:16:08,092
‪（马来西亚 婆罗洲）

168
00:16:10,135 --> 00:16:12,846
‪在杂乱的植被中寻找食物

169
00:16:12,930 --> 00:16:13,973
‪并不容易

170
00:16:20,604 --> 00:16:23,857
‪但凭着几乎无与伦比的嗅觉…

171
00:16:27,194 --> 00:16:29,113
‪它跟着自己的鼻子走

172
00:16:51,176 --> 00:16:54,179
‪它已经缩小了香甜之气的来源范围

173
00:16:55,514 --> 00:16:58,267
‪现在只有一个问题了

174
00:16:59,977 --> 00:17:01,979
‪气味来自大上面

175
00:17:05,649 --> 00:17:07,693
‪四层楼高

176
00:17:09,820 --> 00:17:11,655
‪但是马来熊

177
00:17:11,739 --> 00:17:13,282
‪很喜欢蜂蜜

178
00:17:18,579 --> 00:17:21,290
‪幸好它们还是冠军级别的攀岩手

179
00:17:28,422 --> 00:17:31,091
‪那些又弯又长的爪子

180
00:17:31,175 --> 00:17:32,634
‪抓地力很好

181
00:17:33,635 --> 00:17:37,514
‪像狗一般大小的身躯让它轻盈敏捷

182
00:17:38,265 --> 00:17:39,099
‪可是

183
00:17:40,267 --> 00:17:42,186
‪它爬错树了

184
00:17:46,398 --> 00:17:47,733
‪现在

185
00:17:48,734 --> 00:17:50,486
‪它有了一个竞争者

186
00:18:02,164 --> 00:18:03,916
‪或者没有？

187
00:18:08,879 --> 00:18:12,883
‪马来熊也喜欢享用腐烂的原木

188
00:18:26,647 --> 00:18:29,024
‪趁着另一只熊分心

189
00:18:29,108 --> 00:18:30,943
‪换树的机会来了

190
00:18:46,959 --> 00:18:48,544
‪蜜蜂很生气

191
00:18:48,627 --> 00:18:50,212
‪但是幸好没有蛰针

192
00:18:53,298 --> 00:18:54,424
‪终于

193
00:18:56,552 --> 00:18:58,178
‪它找到了宝藏

194
00:19:03,767 --> 00:19:06,645
‪那些爪子也是使用方便的蜂蜜勺

195
00:19:13,443 --> 00:19:16,363
‪剩下的就由25厘米的舌头来完成

196
00:19:22,995 --> 00:19:25,581
‪只要是在丛林里觅食

197
00:19:25,664 --> 00:19:28,500
‪马来熊必定“舌”到成功

198
00:19:37,176 --> 00:19:40,637
‪但由于赖以生存的森林遭到砍伐
‪被用来耕地…

199
00:19:42,890 --> 00:19:45,017
‪马来熊逐渐无家可归

200
00:19:48,562 --> 00:19:52,733
‪更容易遭受捕猎 成为传统药材

201
00:19:55,444 --> 00:19:57,988
‪它们现在是地球上最稀少的熊

202
00:20:01,992 --> 00:20:03,285
‪甚至

203
00:20:03,952 --> 00:20:06,705
‪比最神秘的熊还要稀少

204
00:20:35,567 --> 00:20:39,863
‪（中国 四川省）

205
00:20:41,657 --> 00:20:45,118
‪大熊猫一生中大部分时间

206
00:20:45,202 --> 00:20:47,287
‪只吃一样东西

207
00:20:50,123 --> 00:20:51,041
‪竹子

208
00:20:55,837 --> 00:20:58,632
‪这只大熊猫可以消磨12个小时

209
00:20:58,715 --> 00:21:00,217
‪狼吞虎咽地吃竹子

210
00:21:03,345 --> 00:21:06,598
‪竹子占据它饮食的99%

211
00:21:11,561 --> 00:21:13,480
‪它是唯一一种

212
00:21:13,563 --> 00:21:16,483
‪爪子上有籽骨的熊 有点像大拇指

213
00:21:18,902 --> 00:21:22,281
‪做竹子热狗再合适不过了

214
00:21:23,782 --> 00:21:27,327
‪素食似乎是个奇怪的选择

215
00:21:27,411 --> 00:21:29,288
‪熊猫本来已经进化成了食肉动物

216
00:21:33,000 --> 00:21:35,335
‪但是因为竹子资源丰富

217
00:21:35,419 --> 00:21:37,045
‪而且常年生长

218
00:21:37,129 --> 00:21:41,091
‪数百万年来
‪它们投向了更容易的选择

219
00:21:43,927 --> 00:21:45,220
‪问题是

220
00:21:45,304 --> 00:21:48,682
‪它们的肠道还没有完全适应消化竹子

221
00:21:51,101 --> 00:21:53,103
‪因此它只能靠大量进食

222
00:21:53,186 --> 00:21:54,771
‪才能生存

223
00:21:56,690 --> 00:21:58,317
‪所以就几乎做不了其他事了

224
00:22:08,327 --> 00:22:12,372
‪但是当人类砍掉亚洲的大片竹林时

225
00:22:13,165 --> 00:22:15,459
‪熊猫没有食物可吃

226
00:22:16,251 --> 00:22:18,795
‪被迫濒临灭绝

227
00:22:21,715 --> 00:22:24,217
‪如此特殊的饮食纯属例外

228
00:22:26,053 --> 00:22:29,181
‪大多数熊有着更冒险的口味

229
00:22:33,560 --> 00:22:37,898
‪（美国 明尼苏达州）

230
00:22:38,732 --> 00:22:41,026
‪加拿大边境的森林

231
00:22:41,651 --> 00:22:44,696
‪是数以万计美洲黑熊的家园

232
00:22:46,156 --> 00:22:49,034
‪现在是仲夏
‪这位妈妈正带领着它的幼崽

233
00:22:49,117 --> 00:22:50,577
‪掠夺性进食

234
00:22:52,120 --> 00:22:55,374
‪它用柔和的咕噜声让幼崽不掉队

235
00:22:59,544 --> 00:23:02,172
‪六个月大的幼崽好奇心很重

236
00:23:07,803 --> 00:23:10,263
‪但还是很天真

237
00:23:18,980 --> 00:23:22,401
‪妈妈必须要留心它们
‪听着它们的声音

238
00:23:31,868 --> 00:23:33,620
‪妈妈用低沉的哼叫声告诉它们

239
00:23:34,454 --> 00:23:35,872
‪事情不对劲

240
00:23:45,340 --> 00:23:46,258
‪一只雄性黑熊

241
00:23:48,218 --> 00:23:50,178
‪它可能杀死幼崽

242
00:23:50,262 --> 00:23:52,139
‪强迫妈妈回到发情期

243
00:23:56,268 --> 00:23:59,271
‪妈妈咆哮时 就该躲起来了

244
00:24:18,081 --> 00:24:19,875
‪妈妈在警告那头雄性

245
00:24:19,958 --> 00:24:22,169
‪但它没有领会到这一信息

246
00:24:27,507 --> 00:24:29,801
‪那声咳嗽的意思是“攀爬”

247
00:24:51,907 --> 00:24:54,784
‪现在妈妈必须保持镇定

248
00:24:54,868 --> 00:24:56,745
‪坚守阵地

249
00:25:03,376 --> 00:25:05,462
‪直到对方明白

250
00:25:05,545 --> 00:25:07,380
‪它是个不好惹的角色

251
00:25:21,269 --> 00:25:23,021
‪自从离开巢穴后

252
00:25:23,688 --> 00:25:26,107
‪妈妈一直鼓励它的幼崽攀爬

253
00:25:29,528 --> 00:25:30,695
‪成功了

254
00:25:35,158 --> 00:25:37,619
‪在它确定海岸安全之前

255
00:25:37,702 --> 00:25:39,496
‪幼崽会远离地面

256
00:25:43,625 --> 00:25:46,044
‪这是继续进行攀岩练习的一次机会

257
00:25:47,128 --> 00:25:50,006
‪而妈妈会趁此机会 欣慰地打个盹

258
00:26:08,858 --> 00:26:10,193
‪但不能睡太久

259
00:26:11,820 --> 00:26:13,071
‪秋天要来了

260
00:26:13,655 --> 00:26:16,199
‪全家都需要吃饱

261
00:26:21,788 --> 00:26:23,623
‪在生存环境更残酷的地方

262
00:26:23,707 --> 00:26:25,542
‪找到食物和水

263
00:26:25,625 --> 00:26:27,502
‪是常年都要面对的挑战

264
00:26:31,298 --> 00:26:35,010
‪（秘鲁 安第斯山脉）

265
00:26:37,137 --> 00:26:39,681
‪这些山峰或许看起来不宜居住

266
00:26:42,267 --> 00:26:44,394
‪但是对于一些眼镜熊来说

267
00:26:45,353 --> 00:26:46,354
‪这里是家园

268
00:26:47,772 --> 00:26:51,067
‪南美洲唯一的熊种

269
00:26:52,861 --> 00:26:54,696
‪现实生活中的帕丁顿熊

270
00:26:57,407 --> 00:27:00,160
‪但这里不需要穿粗呢外衣或戴防雨帽

271
00:27:01,077 --> 00:27:03,496
‪最高的山脉挡住了云层…

272
00:27:07,917 --> 00:27:10,920
‪形成了高海拔的沙漠

273
00:27:17,636 --> 00:27:21,181
‪这里可以连续八个月不下雨

274
00:27:32,025 --> 00:27:35,695
‪这里是方圆数公里内

275
00:27:35,779 --> 00:27:36,821
‪唯一的天然泉水

276
00:27:39,366 --> 00:27:42,035
‪郁郁葱葱的绿洲

277
00:27:55,799 --> 00:27:58,093
‪它可以在这里休息一整天

278
00:28:03,473 --> 00:28:05,725
‪若一只雄性独占浴池

279
00:28:06,393 --> 00:28:08,978
‪其他雄性就必须更加足智多谋

280
00:28:24,452 --> 00:28:26,538
‪这头熊妈妈在向幼崽展示

281
00:28:26,621 --> 00:28:28,039
‪即使是树干

282
00:28:28,123 --> 00:28:29,791
‪也有助于生存

283
00:28:30,875 --> 00:28:34,212
‪相比同体型的任何熊来说
‪它的下巴最有力

284
00:28:34,295 --> 00:28:37,924
‪所以能很容易把树干撕裂
‪喝到里面的水分

285
00:28:47,183 --> 00:28:50,228
‪食物和水如此稀缺

286
00:28:50,311 --> 00:28:51,855
‪它必须保存体力

287
00:28:52,647 --> 00:28:54,232
‪经常休息

288
00:28:57,360 --> 00:28:59,446
‪离开地面会更凉爽一点

289
00:28:59,529 --> 00:29:01,865
‪但细长的树枝不能提供太多支撑

290
00:29:03,575 --> 00:29:05,368
‪所以它做了一件

291
00:29:05,452 --> 00:29:07,203
‪其他熊没有做过的事

292
00:29:14,753 --> 00:29:16,629
‪它自己制作了一张床

293
00:29:25,930 --> 00:29:28,099
‪正是这种独创性

294
00:29:28,183 --> 00:29:31,978
‪帮助它渡过难关 直到雨季最终回归

295
00:29:36,566 --> 00:29:38,318
‪天然空调

296
00:29:40,945 --> 00:29:42,155
‪舒适至极

297
00:29:44,032 --> 00:29:46,701
‪午睡的最佳地点

298
00:29:50,121 --> 00:29:52,499
‪（美国 阿拉斯加州）

299
00:29:52,582 --> 00:29:53,917
‪在遥远的北方

300
00:29:54,501 --> 00:29:56,085
‪生活不怎么太平

301
00:30:00,924 --> 00:30:02,675
‪棕熊霸主

302
00:30:03,760 --> 00:30:04,969
‪自春天以来

303
00:30:05,053 --> 00:30:07,388
‪它每天增重一公斤

304
00:30:08,848 --> 00:30:10,517
‪它需要额外的体重

305
00:30:14,062 --> 00:30:17,148
‪体型高大和心狠手辣使得它成为老大

306
00:30:17,941 --> 00:30:19,984
‪统治着最佳进食地点

307
00:30:20,068 --> 00:30:22,111
‪并且与当地的雌性交配

308
00:30:29,786 --> 00:30:31,830
‪但在掌权十年后

309
00:30:32,956 --> 00:30:35,291
‪它似乎风采不如当年

310
00:30:57,272 --> 00:30:59,190
‪还有一个更严重的问题

311
00:30:59,274 --> 00:31:00,567
‪正在逼近

312
00:31:15,748 --> 00:31:18,585
‪一头年轻的熊嗅到了它的软肋

313
00:31:32,307 --> 00:31:35,184
‪熊老大需要向雌性证明自己

314
00:31:36,060 --> 00:31:38,980
‪让这头年轻的雄知道
‪谁是这里的掌权者

315
00:31:41,941 --> 00:31:43,526
‪牛仔大摇大摆地走来走去

316
00:31:51,659 --> 00:31:54,203
‪就是要用气势压倒对方

317
00:31:58,708 --> 00:31:59,918
‪唯一的问题是

318
00:32:01,502 --> 00:32:04,297
‪这头年轻的棕熊体型庞大

319
00:32:13,890 --> 00:32:15,767
‪但是在雌性的注视下

320
00:32:17,894 --> 00:32:19,562
‪现在可不能退缩

321
00:33:13,074 --> 00:33:15,785
‪昔日的老大已经倒下

322
00:33:27,797 --> 00:33:30,341
‪这片草地的管理层发生变化

323
00:33:31,801 --> 00:33:33,594
‪立即生效

324
00:33:42,186 --> 00:33:44,439
‪旧主的统治结束了

325
00:33:51,237 --> 00:33:53,698
‪雌性做出了聪明的选择

326
00:33:53,781 --> 00:33:56,117
‪等待一头更强壮更健康的棕熊

327
00:33:56,200 --> 00:33:57,702
‪来当它孩子的父亲

328
00:34:00,788 --> 00:34:02,498
‪它在漫长而温暖的日子里

329
00:34:02,582 --> 00:34:04,000
‪收获回报

330
00:34:07,420 --> 00:34:09,047
‪但是在更遥远的北部

331
00:34:09,130 --> 00:34:10,965
‪仅仅度过夏天

332
00:34:11,466 --> 00:34:12,967
‪就是一场严峻的挑战

333
00:34:17,638 --> 00:34:20,224
‪每年随着北极变暖

334
00:34:20,308 --> 00:34:22,477
‪海冰向北消退

335
00:34:36,032 --> 00:34:40,411
‪北极熊被困在陆地上
‪这里几乎没有食物可吃

336
00:34:48,252 --> 00:34:51,172
‪如今 气候变化使得冰融化得更早

337
00:34:52,340 --> 00:34:54,467
‪北极熊挨饿的时间更长

338
00:34:57,095 --> 00:34:59,680
‪妈妈必须拼尽全力

339
00:34:59,764 --> 00:35:01,557
‪让全家活下去

340
00:35:06,521 --> 00:35:10,191
‪即使这意味着带领它们走向危险

341
00:35:13,194 --> 00:35:15,113
‪在阿拉斯加北部海岸

342
00:35:15,196 --> 00:35:18,366
‪勉强果腹的捕鲸者留下了大堆骨头

343
00:35:20,701 --> 00:35:22,578
‪在饥饿的驱使下

344
00:35:22,662 --> 00:35:25,039
‪北极熊一起去拾荒觅食

345
00:35:28,835 --> 00:35:31,879
‪它们互相忍受…到一定的程度

346
00:35:37,969 --> 00:35:42,098
‪妈妈知道它的幼崽
‪极易被脾气暴躁的成年北极熊伤害

347
00:35:48,062 --> 00:35:50,356
‪但是饥饿的威胁

348
00:35:50,439 --> 00:35:51,607
‪更严重

349
00:35:57,905 --> 00:36:00,199
‪幼崽将必须学会

350
00:36:00,283 --> 00:36:02,618
‪忍辱负重 委曲求全

351
00:36:03,161 --> 00:36:06,122
‪如果它们想熬过
‪之后更久更炎热的夏天

352
00:36:12,420 --> 00:36:13,754
‪即便如此

353
00:36:13,838 --> 00:36:16,966
‪根据预测 北极熊的数量
‪在未来几十年里

354
00:36:17,049 --> 00:36:18,759
‪会减少三分之一

355
00:36:26,851 --> 00:36:29,187
‪它们不是唯一受到威胁的物种

356
00:36:31,147 --> 00:36:34,817
‪地球上这八种熊中有六种

357
00:36:34,901 --> 00:36:36,611
‪极其灭绝

358
00:36:38,863 --> 00:36:40,364
‪最大的威胁

359
00:36:41,199 --> 00:36:42,700
‪就是栖息地的丧失

360
00:36:48,915 --> 00:36:51,083
‪许多熊也面临着迫害

361
00:36:54,462 --> 00:36:56,756
‪但现在为时未晚 依然可以拯救它们

362
00:36:58,466 --> 00:37:01,302
‪保护它们繁衍生息所需的荒野…

363
00:37:04,347 --> 00:37:07,308
‪并通过营救

364
00:37:07,391 --> 00:37:08,851
‪恢复栖息地

365
00:37:10,019 --> 00:37:11,270
‪释放被圈养的熊帮助它们

366
00:37:21,989 --> 00:37:23,866
‪实践证明 这些手段是有效的

367
00:37:25,326 --> 00:37:27,787
‪育种项目和森林保护

368
00:37:27,870 --> 00:37:31,165
‪几乎使野生熊猫的数量翻了一番

369
00:37:33,709 --> 00:37:35,628
‪如果我们给熊留出空间

370
00:37:36,212 --> 00:37:38,965
‪剩下的就可以交给它们极强的适应力

371
00:37:41,342 --> 00:37:43,761
‪只要有人

372
00:37:43,844 --> 00:37:45,179
‪为它们指明道路

373
00:37:57,775 --> 00:38:00,486
‪随着秋色席卷北美洲的大地…

374
00:38:02,571 --> 00:38:05,241
‪美洲黑熊妈妈还需要做最后一次努力

375
00:38:05,324 --> 00:38:07,076
‪让幼崽为冬天做好准备

376
00:38:08,995 --> 00:38:11,706
‪它们的目标是高热量食物

377
00:38:14,292 --> 00:38:16,669
‪好年景时 橡果的丰收

378
00:38:16,752 --> 00:38:18,713
‪能够提供大量的碳水化合物和脂肪

379
00:38:24,010 --> 00:38:26,470
‪但如果缺乏野外食物

380
00:38:27,179 --> 00:38:28,931
‪熊就会前往市区…

381
00:38:31,726 --> 00:38:33,519
‪打包食物带走

382
00:38:33,602 --> 00:38:35,604
‪充分利用

383
00:38:35,688 --> 00:38:37,023
‪我们扔掉的食物

384
00:38:41,110 --> 00:38:43,070
‪在城市丛林里

385
00:38:43,154 --> 00:38:44,530
‪或者在野外

386
00:38:44,613 --> 00:38:47,491
‪熊依赖于它们足智多谋的本能

387
00:38:47,575 --> 00:38:49,118
‪在秋天吃饱

388
00:38:53,331 --> 00:38:57,209
‪熊的体型越大 盛宴就越壮观

389
00:38:58,169 --> 00:39:02,715
‪（俄罗斯 堪察加）

390
00:39:04,008 --> 00:39:05,551
‪棕熊

391
00:39:05,634 --> 00:39:08,304
‪所有熊中分布最广的物种

392
00:39:08,387 --> 00:39:10,389
‪遍布北美洲

393
00:39:10,473 --> 00:39:11,849
‪欧洲和亚洲

394
00:39:18,981 --> 00:39:22,193
‪最大的棕熊群生活在食物充足的地方

395
00:39:23,319 --> 00:39:27,406
‪这座火山半岛上大约有一万头棕熊

396
00:39:30,159 --> 00:39:33,204
‪但这片土地很快就会被冰封雪冻

397
00:39:33,287 --> 00:39:35,081
‪长达六个月

398
00:39:36,707 --> 00:39:41,128
‪要想撑过这么久的冬眠
‪它们需要让自己的体重翻番

399
00:39:43,589 --> 00:39:45,925
‪只有一个办法

400
00:39:46,926 --> 00:39:48,260
‪捕鱼

401
00:40:01,982 --> 00:40:03,150
‪每年

402
00:40:03,234 --> 00:40:07,071
‪数以百万计的饲养鲑鱼
‪提供了大量的猎物来源

403
00:40:15,413 --> 00:40:17,373
‪一头体型巨大的雄性棕熊

404
00:40:17,456 --> 00:40:21,585
‪一天吃掉的食物
‪热量能达到惊人的十万卡路里

405
00:40:22,128 --> 00:40:24,922
‪相当于300个芝士汉堡

406
00:40:26,674 --> 00:40:28,467
‪这叫贪食症

407
00:40:29,051 --> 00:40:30,386
‪它们可以吃这个

408
00:40:30,469 --> 00:40:31,679
‪吃那个

409
00:40:32,263 --> 00:40:33,848
‪不停地吃

410
00:40:33,931 --> 00:40:35,766
‪从来不觉得饱

411
00:40:39,395 --> 00:40:41,939
‪享受时令盛宴并将其储存为脂肪

412
00:40:42,565 --> 00:40:44,692
‪为漫漫寒冬提供养料

413
00:40:54,326 --> 00:40:57,163
‪每种熊的习性略有不同

414
00:41:00,124 --> 00:41:02,751
‪但它们有一个共同点

415
00:41:06,130 --> 00:41:08,090
‪妈妈们花时间

416
00:41:08,174 --> 00:41:10,551
‪把技能传给后代…

417
00:41:16,140 --> 00:41:19,310
‪并带领它们的幼崽度过四季

418
00:41:21,145 --> 00:41:23,939
‪这就是熊获得成功的真正秘诀

419
00:41:26,484 --> 00:41:29,195
‪无论是忍受严酷的沙漠

420
00:41:30,863 --> 00:41:34,700
‪还是再次出发 面对北极的冬天

421
00:41:48,172 --> 00:41:51,800
‪美洲黑熊幼崽成功撑到了
‪这一年的年末

422
00:41:55,387 --> 00:41:56,514
‪它们回到巢穴

423
00:41:57,806 --> 00:41:59,600
‪身体里的电池蓄满了电…

424
00:42:03,020 --> 00:42:05,022
‪已经进入了待机模式

425
00:42:11,695 --> 00:42:12,988
‪安全又温暖

426
00:42:13,656 --> 00:42:16,283
‪它们会安心睡觉 直到春天回归

427
00:42:19,078 --> 00:42:21,497
‪依偎在妈妈身边

428
00:43:08,711 --> 00:43:10,629
‪字幕翻译：七月