From the brains behind brains on, this is the moment of um.

Answering those questions that make you go... The moment of um comes to you from 8 p.m. studios. I'm Mark Sanchez.

It's been a long cold winter.

Springtime is finally here.

All the leaves are green and the flowers are blooming.

And just when you think it's safe to go back outside.

Oh no, allergies are back.

Just like clockwork, every year I'm sniffling and sneezing. But it's not just

plants that cause allergy problems. Some people have allergies to animals like cats

or horses and allergies to food like peanuts and milk are pretty common too.

But if humans have lots of different kinds of allergies, do other creatures have similar problems?

Hi I'm Kayla from Peter, Texas.

My question is the fish have allergies.

Not in the way that we think of an allergy, and you know, where we get the pollen in our nose and we sneeze and we get the red itchy eyes.

My name is Laura Zimmerman and I'm a biologist.

Specifically an allergy is when your immune system

sees something foreign and overreacts to it.

So an antibody is a protein.

In humans we have five types.

Allergies as we think of them and humans involve a type of antibody that we call IGE.

The IG stands for immunoglobulin and that's just another term for the word antibody.

The IGE, when it's working correctly as part of your body's immune response,

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