Animal tricks -- stupid or otherwise -- were not invented by David Letterman. Indeed, the Medicis -- over-the-top dog people, even by Renaissance standards -- supposedly had a dog who not only cleared ...

The reimagining of the Letterman segment will be a half-hour variety show that will retain all the original charm, silly fun, and appreciation for the bond between humans and their animal friends.

Before you go to the circus, consider all the suffering those six elephants and 24 lions experience. Elephants are known to roam up to 25 miles in a day in the wild and are instead kept in chains at ...