What is the only mammal naturally capable of true and sustained flight?

More Questions:

Who was the first African-American player inducted into the Baseball Hall of Fame?

What trademark is used in public relations to refer to phony grassroots campaigns?

What's the subject of the 1969 memoir "Thirteen Days"?

When did Benjamin Britten's opera "Death in Venice" premier?

Who explored the Hudson River in 1609?

Which Bay is located to the north of Spain?

What disease, caused by the bacteria Y. pestis, is spread by fleas and rats?

Which spacecraft was the first one to leave the Solar System?

If you suffer from phobophobia, what do you fear?

Which actress played a character named Ellen Ripley in the movie "Alien"?

What sitcom star’s parents were named Morty and Helen on his TV show?

What island nation was invaded by US troops in October 1983?

Which US amendment to the Constitution limits the president to two terms?

Which gland is enlarged in the condition known as "goitre"?

What year did James Fenimore Cooper publish the novel "The Last of the Mohicans"?