I didn't know this before but today is Mutt's Day! No one seems to know how it originated but I think it's a very good idea.
If you don't have a mutt of your own, consider adopting one. There are truly uncounted numbers of unwanted dogs languishing in shelters right this minute for want of a loving home.
And while we're on the subject of animal companion adoption, why not take a look at a slide show type article on MSN entitled How Pets Keep Us Healthy as a little encouragement?.
If you already have a dog who happens to be a pure bred, well, why not make him or her an honorary mutt for the day (!) and pamper that sweet thing a little bit.