Who knew a funny-sounding duck would become so famous and successful?

In 2010, Disney and the university rewrote their agreement to allow wider use of the Duck mascot for public appearances, but the Donald likeness remains covered by a trademark agreement.

No, we’re not talking about Daffy or Donald ... Aflac (as the duck is officially called) has transformed into a powerful corporate mascot over the past quarter-century. And the company ...