Tai Shan, the 4-month-old giant panda cub at the Smithsonian's National Zoo, gets his teeth checked by Veterinarian Ellen Bronson (right) while Veterinarian Nancy Boedecker (center) and Assistant Curator Lisa Stevens..(left) hold him, on November 21, 2005, in Washington. (UPI Photo/Jessie Cohen/Smithsonian's National Zoo)
