Like many pet professionals, Jen Tserng didn't set out to start a dog business. She actually started dog walking to help bring in pocket money while she was at medical school. Then when she was offered an unpaid internship in NYC she turned into a nomadic dog walker, saving on extortionate rent fees by pet sitting her way through school. This is an interesting and unusual pet business that will appeal to any pet-prenuer with a sense of adventure! Don't forget to grab my 33 ideas at www.growyourpetbusinessfast.com/33ideas