Putting a tiger in your tank is out. Renting one for your office is in. Marine World Africa U.S.A., a wildlife and theme park in Redwood City, Calif., claims a booming business in renting out tigers for sales meetings, camels and elephants for office openings, and chimpanzees and orangutans for cocktail parties. Says park spokeswoman Jamie Uyehara, "Companies are looking for ways to stand out from the rest of the pack."