另一个理论认为发达的头骨是用来对付像兔子、驯鹿、狐狸和马这样难嚼的食物的。

Another theory is that developed skulls are used to treat difficult foods like rabbits, reindeer, foxes, and horses.

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还有，打猎不只让狐狸的数量受到控制，也可以支持乡村经济，给照顾狗和马的人提供工作机会。

Also, not only does hunting keep the fox population under control, but it also supports the rural economy, providing jobs for people taking care of the dogs and horses.

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浓密的皮毛和机警的眼神让这种灰狐狸能在智利阿塔卡马沙漠的寒冷恶劣气候中得以生存。

Lush fur and watchful eyes help this gray fox survive in the harsh, often cold climate of Chile's Atacama Desert, the driest place on Earth.

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