So we've heard of therapy dogs, but have you heard of therapy cats?

Hmm.

Well, students at this very school recently had a visit from a therapy cat named Big Boy, and Big Boy was joined by his friend Charlie the therapy dog.

Check it out.

-That's nice.

Well, our new kid's awesome.

This is Charlie, and that's Big Boy.

Can anybody tell us what a therapy animal is?

What do you think?

(Evangeline) Um, it is somebody who makes-- It is an animal that makes somebody feel happy.

-These happy students inside Ms.

Barrett's kindergarten class at Goolsby Elementary School were pleasantly surprised to not only get to hang out with a therapy dog-- -Who else wants to hold him?

We'll just take turns.

- --but also a therapy cat.

(Fox) I only knew what therapy dogs were.

I never knew that there was therapy cats.

(Jori Spangler) So you guys can pet him if you want.

Just be soft.

See how soft he is?

There are not that many therapy cats that actually pass the Pet Partner's evaluation.

So I had to take online tests, and then we had to go through about a 30-minute thing where he had to be held by people, and just different things to see how they react.

And they have to be calm, as you can see.

-Big Boy and Charlie, just two of the gentle therapy animals from Pet Partners of Las Vegas.

(Sue Grundfest) They don't criticize you.

They don't judge you.

They just receive you.

And when we choose pets for Pet Partners, it's a very strict evaluation, 23 elements.

The handler is tested as well.

We have to know what we're doing, but sometimes we have a pet that just has that extra something.

Big Boy has it.

Charlie has it.

-Following an engaging classroom presentation by a volunteer, Jori Spangler with her Big Boy-- -He is just unique.

- --and Pet Partners of Las Vegas president Sue Grundfest with her sweet Charlie.

-You don't remember anything about Charlie that's a little different?

-Is it, is it deaf?

-Yes, he can't hear.

He's deaf.

-Each student walks away with these cool trading cards, which include some fun facts about Big Boy-- -He's chill, and he's fluffy and soft.

- --and Charlie.

-That he's really nice.

-And when this really nice therapy dog and chill therapy cat visit schools, the hope is that students also walk away with some truly important life lessons.

-And I think it just teaches us that the connection has nothing to do with your language.

And I teach the children.

It's a different kind of communication, and it does teach kindness.

He's just laying there.

Yeah, because he loves his mommy.

-Well, this isn't the only school that gets special visits from Big Boy and Charlie.

They also visit our friends at Helen Marie Smith Elementary School.

They've been doing that for about 10 years now.