According baseball purists the phrase “dog days of summer” refers to the time between July 3rd and August 11th. It's during this 40-day stretch that the temperature and humidity reach their highest points of the season.
The phrase dog days of summer can also be interpreted in other ways. For instance, for the purpose of a look-a-like slide show, it could refer to baseball players and their doggy doubles.
So for the Bleacher Report slide show purists, this one's for you.