Rolf the Great Dane - The biggest Dog I have Ever Seen

Meet Rolf.  He is a very big Great Dane.  I had the pleasure of meeting him last night as his owners strolled by the store last night.  He is five years old and full of energy.  It was hard to catch a good photo of him because he was pretty nervous about being in the store.  I wish I could have gotten a good shot of his face.

His back is just about the same height as my belt.  His head came up to my chest when he stood at full attention.  He is without a doubt the largest dog I have ever seen in person.