You have heard of “the dog days of summer,” right? Bet you didn’t know that expression has nothing to do with dogs. (Yeah, I know…we thought it did, too!) That expression actually dates back to Roman times, when they held the belief that Sirius, the Dog Star, added its heat to that of the sun from July 3 to August 11. Thus, the temperatures soared during those days. The Romans then referred to these days as “days of the dog.”