Stephanie's stump was walking through the Lincoln Park Zoo one cold winter night with a friend.

And they noticed there were no animals in sight.

We were just wondering what happens to the animals when it gets cold, where do they go?

Especially the warm weather animals.

Do they ship them down to Florida?

And she wondered if they stay inside all winter, doesn't that drive them nuts?

Because I know I get cabin fever in the winter, so imagine how they must feel.

I'm Catherine Nagasawa, Curious City's multimedia producer.

And it turns out the zoo animals don't actually head to Florida for the winter.

But Stephanie's concern about cabin fever is real.

Animals get stressed when confined to small indoor

spaces. It can even affect their health. So I take Stephanie to the Lincoln Park Zoo to learn how

they help animals cope with winter. We speak to general curator Dave Bernier, who explains

the zoo gets the animals outside as much as possible. We know that the animals prefer to be outside or they prefer to have more room.

But not all of them can handle cold weather.

And the zoo divides animals into three categories, each requiring a different strategy.

There are cold tolerant animals who don't need much help in the winter.

There are weather-hardy animals that can go outside a little, but also need help staying

comfortable.

And most challenging, there are temper animals who only make it outside on the mildest winter

days, so the zoo staff has to get creative to stave off the cabin fever.

Starting with the cold tolerant animals, Bernier says as often as possible, the zoo looks

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