Oh, Thor. I always love to read of your stories of the little guy. He's got such a personality, and he's so lucky to have you. You are an awesome trainer and always working on making him happier.
As for corn cobs, I don't think it's the best "treat". I'm pretty sure I've also read they can cause obstructions. My moms dog used to eat them all the time, but, well, my mom and step-dad were not good dog owners, LOL...