That's a hippo. And when it comes to getting up close and personal with hippos, Brady Barr is the expert.

Barr is a herpetologist -- and host of the National Geographic Channel's show "Dangerous Encounters."

His latest episode is called "Undercover Hippo."And it involves Barr getting VERY close to the largest population of wild hippos on earth.

That took the National Geographic team to the Luangwa River.

It's in the country we asked you to name for today's Geo Quiz.

Listen to the answer