Doggie Smiles

Do you think dogs smile?  A couple of years ago a friend of mine talked about her dog smiling.  I thought she was crazy, she is but...well, I just figured it was just another one of her quirks and moved on.  Then I took this picture of my dog.

I'm not kidding, this is really my dog, she is not growling, she kinda looks like she's...oh, you know...smiling :) And it makes me smile every time I look at it.