I should come clean. This is not really a photo of a hell hound snarling and gnashing his teeth. It is an image that was rotated so that you can't see as clearly that he's lying on his back. He was trying to select a tender blade of grass to chew on. The bristly ones with the seeds and hairs hurt the tender inside of his mouth. But because he's upside down, his jowels and tongue have fallen back, revealing all those pointy teeth. In fact, he really is a sweetheart. I was just foolin' with ya.