A study has shown that a male zebra finch is less likely to court a female zebra finch if he did not form any social friendships with female zebra finches when younger.

Former U.S. President Ronald Reagan once wore a Nazi uniform while acting in a film during his Hollywood days. The name of the movie was "Desperate Journey," which was filmed in 1942.

Hockey pucks were originally made from frozen cow dung.

AMAZING FACTS