Tigers live alone and aggressively scent-mark large territories to keep their rivals away.

老虎一般独居，他们会利用攻击性极强的气味来标记自己的领地以驱赶其他同类。

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He said there would also be an increase in enclosure swapping, allowing the pandas to smell each other's scent and mark in each other's enclosures.

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When I returned a couple of weeks later, Mr. Malle confirmed that the scent was called Jurassic Flower and that he'd made it exclusively for the Mark.

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