Something like 50 million Americans will travel somewhere this Thanksgiving.

Airports are going to be full of all kinds of people and three kinds of animals.

Hal Herzog studies how humans and animals interact at Western Carolina University.

The second type you're going to see are animals that are service animals.

And these are trained specifically to do a specific function.

And they are not pets. They do have legal status under the Americans with Disabilities Act.

The third type of animal is the most controversial and that's emotional support animals.

And these also have legal status under the Air Carrier Access Act.

But they don't have to be trained and they are allowed to be personal pets.

And that's where the wrinkle comes in right there.

Using emotional service animals when you fly seems to be a growing trend.

Yeah and now there's new concern that people are faking the need for the animals.

Delta Airlines on Friday tightening the leash on passengers who want to fly with their pets.

Jet Blue is tightening its policy on emotional support animals.

Passengers will have to fill out three documents to fly with the animals.

Thousands and I mean thousands of animals born in the airlines each and every year.

Turkeys, possums and snakes on planes.

It's a scam. Everyone knows it's a scam.

Airlines are already making decisions to change the rules around these things.

But now legislators want to go one step further because they can do a whole lot more about it

in a very real sense. My safety, my life is in the pause of my dog.

So let's talk more about the wrinkle because I feel like everyone pretty much understands the

...