北极狐会随着季节变化改变毛色，以融入周围环境。

The Arctic fox changes its fur color with the seasons to blend into its surroundings.

但对北极狐来说，这并不少见。

But it is not unusual for the Arctic fox.

北极狐也是国家野生保护动物.

The arctic fox is also a wild animal protected by the state.

北极狐在什么时候群居？

Do arctic foxes live in groups?

北极狐在什么时候群居?

When do arctic foxes live in groups?

北极狐最喜欢的食物是什么？

Is the favourite food of arctic foxes?

北极狐里，杀婴现象很罕见。

Among Arctic foxes, infanticide is rare.

北极狐最喜欢的食物是什么?

What is the favourite food of arctic foxes?

一头北极狐在雪雁的领地附近逡巡。

An Arctic fox surveys the colony.

唯一的本土陆生哺乳动物是北极狐。

The only native land mammal is the Arctic fox.