What's In Your Doggy Bag?

Admit it: you've stolen from the doggy bag or have you?

According to a brief history of the doggy bag, most people take home food from restaurants today for themselves, not their pups. But when it really started, back in the 1940s, the idea was to share with your pooch, to eliminate waste. These were war years after all.

But how the humble paper sac has evolved? What's in yours?