The Pantagraph/LORI ANN COOK Kirk Jones' main job with the Toby Tyler Circus is to tell people about his daring feat of going over Niagra Falls unprotected last October. His secondary job is to help feed, brush and care for some of the 100 exotic animals, including the young camels. By Scott Richardson srichardson@pantagaph.com Advertisement NORMAL -- Kirk Jones doesn't recommend his cure for a mid-life crisis to anyone. Jones, 41, jumped into the Niagara River and went over Niagara Falls on Oct. 20. He's the only person to survive the plunge without safety gear. "The hardest question to answer...