At first I thought it was a birthmark or somethin. But as he/she has gotten bigger it's definitely a scar of some sort I think. Poor thing.
It doesn't seem to be an open wound, it isn't red and isn't bleeding. So I'm about 90% sure it's healed. But as the rest of the pups are beginning to open their eyes, this one is a little behind.
Cypher - The rounded horizontal part is the eye itself. The larger vertical part is what I'm talkin about.