Hi, we're here from Curiosity.com to help you get smarter in just a few minutes.

I'm Cody Gough.

And I'm Ashley Hamer.

Today you learn about why your urge to nibble on baby feet is totally normal,

why there are no animals with three legs, and the different types of psychotherapy

and why they work even when you feel like they don't.

But set us some curiosity.

So it turns out it's normal to have the urge to nibble on baby feet, and the science behind that

urge is pretty interesting.

Now, I'm not around a lot of babies, so I haven't had this happen to me.

Is this a thing with you, Ashley? That's totally a thing. Is this a thing with babies and baby

animals and yeah you just want to just want gobble them up. You don't feel

that? You're just like an unfeeling husk of a human?

That's what I am.

An unfeeling husk.

But if you're listening and you have emotions,

maybe you've seen a baby that was so cute you just wanted to

cutely for lack of a better expression, eat it up. Or as Ashley said, gobble it up.

We probably don't have to tell you that this is not a sign that you're a cannibal.

It's just an example of a thing called dimorphous expression. That's the way that intense

positive emotions can come out in ways that would otherwise be considered negative.

And experts have some theories about its evolutionary benefits.

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