National Geographic Travelのインスタグラム(natgeotravel) - 9月15日 03時19分

Photo by @bertiegregory for my new @natgeowild series on Youtube, 'Wild_Life with Bertie Gregory.' Whenever a female bear senses danger, she'll send her cubs up a tree. Often this danger is a male bear. This is because male bears want to kill cubs that are not their own so that the female will come back into heat. The male can then mate with this female to father his own cubs. Even though all black bears are great climbers, the small cubs are able to get out on the tallest thinest branches out of the reach of males. See the full episode on www.natgeowild.com/wildlife @Explore Canada #explorecanada

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