The Beatles, now and then.

The Beatles, Now and then.

The Last Beatles song.

Out now. Out now. Now.

This is Scientific American's 60 Second Science.

I'm Suzanne Bard.

What do you call a bat that only eats fruit

but isn't classified as one of the fruit bats?

One species that fits that description is thought to live in forests from southern Mexico to the north end of South America,

but they're so rarely seen that very little is known about them,

apart from their unique appearance, which is why the species

is called the wrinkled-faced bat.

Many people say that these bats are really ugly, but the word ugly is for bad biologists a forbidden word so I think we all

agree that they are pretty special looking bats. University of Ulm researcher Marco Chopka

his colleague Gloria Gessinger agrees.

Most bats look like cute little puppies but they have a very wrinkly face and it's just a lot of

wrinkles everywhere.

But something else about the males, maybe an even more unusual facial feature.

It's very easy to distinguish between male and female because the males have this funny face mask.

Using their little bat thumbs, males can pull up a furry flap of skin

to cover their faces like a mask.

The bat almost tries to hide its entire face inside of the mask and people have

...