Does your pup seem upset or in a general malaise? Rover could very well be suffering from clinical depression.
Next time your dog licks his own genitals, be upfront and ask how he's feeling. His answer may surprise you.
Editorial note: Whoa! You've found a super-old post here on BuzzFeed, from an earlier era of the site. It doesn't really represent where we are anymore, and may in fact be totally broken, but we're leaving it up as a part of our early history.