What type of animal was selected to test out the first electric toothbrush?

More Questions:

What song's lyrics include "tap, tap, tapping at your windowpane and bringing joy to every girl and boy"?

What novel won Robert Penn Warren a Pulitzer Prize in 1947?

Which literary work's title character is named Mersault?

In music what is meant by "pianissimo"?

What are the bumps on the tongue that carry the taste buds called?

What type of creatures would you find living in a "formicarium"?

If cattle are bovine, what are sheep?

What kind of animal's kidnapping is solved in "Ace Ventura: Pet Detective"?

What famous rapper's real name is O'Shea Jackson?

Who starred as Danny Ocean in the 2001 movie "Ocean's Eleven"?

In Disney's "Dumbo', what is it that Dumbo is made fun of for?

What TV show featured the fictional "The Raccoons" fraternity?

Rodrigo Diaz de Vivar famous under what nickname?

What was the first American city to host the Summer Olympics?

The Island of Bornhold is part of which country?