I've googled and can't find anything that looks remotely like this, and unfortunately it doesn't show up in pictures!
My dog Cole is 6. When I was looking at his eyes last Saturday, I noticed a dark black spot, approximately 2cm in diameter at the bottom of his left eye. It appears to be BETWEEN the cornea and the iris. I also looked at his eye later when he was lying down on his side, and the black spot had moved! It's always at an edge that's closest to the ground.
What could this be? We have our annual vet appointment in June and I was planning to ask the Vet then. When his eyes dilate real large, it appears that the dot would be a slight obstruction. He hasn't injured his eye and even if he had, I have no idea how something could get between the cornea and the iris!
Any ideas what this could be? It doesn't match any of the eye disease pictures I've looked up on the net.