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This is Scientific American 60-Second Science. I'm Maddie Bender.

Compared to its more famous bushy-tailed cousin, The Tree Scroll, the golden-mantle ground scroll looks a lot like a chipmunk and spends most of the year hibernating.

And talk about bird-brained, ground scrolls' brains are about the size of the pine nuts they eat.

So, might come as a surprise that according to new research, these scrolls have observable personalities.

But it's something Jacqueline Allepurde noticed back in 2015 when she joined a project at the Rocky Mountain Biological Laboratory in Gothic Colorado.

There, they had been studying the behavior of golden-mantle ground scrolls for over 30 years.

To her, some of the scrolls seem skittish and shy, while others were more than happy to get up close and personal for a snack.

Other scientists had observed individual animals that looked like they might have personalities,

but no one had evaluated them rigorously to see if their quirks met the definition of consistent behavior over time.

From 2016 to 2018, Allepurde put dozens of scrolls through a four-part Olympics that assessed the rodents on four characteristics,

activity, sociability, boldness, and aggressiveness.

Essentially, a Myers-Briggs personality test for ground scrolls.

It pretty much is a Myers-Briggs for squirrels.

But I think that if we said that to people, they just might not take us seriously.

Two tests took place in a arena consisting of a small wooden box with four indentations in the floor.

Allepurde tracked a squirrel's actions with a GoPro camera and analyzed its activity.

Did the squirrel investigate the floor? Was it grooming? Or was it trying to escape as you can hear in this clip?

In the second test for sociability, Allepurde slid out a trap wall revealing a mirror in the arena.

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