If it's a choice between golf champ Woods's real name Eldrick or nickname Tiger, we'd have to go with the latter. But while animal names are becoming more familiar and stylish, we'd recommend Wolf or Fox over Tiger.
Tiger, dog in animated series "Kipper the Dog"
Tiger Gleeson, character in Australian TV series "Round the Twist"
"Tiger," comic strip by BudBlake and its main character
Tiger, sidekick of Judomaster in DC Comics
Tiger, dog on TV's "The Brady Bunch"
Tiger, cat in the American Tail animated films
Tiger, character in Ibn-e-Safi's Imran series
TigerJackson, character in the Tekken video games
Tiger Ow, character in film "Project A Part II"