You may have heard the term "Dogs of the Dow" -- but what is it exactly?

The "Dogs of the Dow" investment strategy is a technique used by some stock market investors. It calls for the investor to buy the ten highest dividend-yielding stocks within the Dow Jones Industrial Average and review these picks on an annual basis.

The theory is that these ten dividend-producing stocks tend to have a good overall return because they are typically being bought at depressed prices; therefore, the investor enjoys high dividends, while these stocks "snap back" to higher prices.