My two Dobermans (and every one I've owned previously) periodically get what is known in my house as "eye boogies." If I see them, I will gently touch a tissue to the inner corner of the eye, and the boogie will stick to it and I simply pull it out. Otherwise, I'm sure the dogs just shake their heads and they end up wherever, unfortunately, which is why I try to remove them when I see them.
They are always some shade of grayish-white and semi-translucent. This past week, I have noticed Logan having brownish-colored ones just in his left eye. They seem to have a slightly different texture, too, and have a tendency to be found stuck to the skin below the corner of his eye instead of just staying in the inner corner of the eye like the typical ones do. One I removed yesterday had a distinctly red color, and today's is kind of reddish-brown. I can see nothing else obviously wrong with his eye. He looks and acts normal in every other respect.
I'm figuring if he is the same tomorrow I will call my vet, but in the meantime I just wondered if any of you have had this kind of experience or have any idea why the eye goop suddenly changed from gray to reddish-brown.