Back in 2005 this same thing happened to Nebo. I looked at him and noticed one of his pupils was bigger than the other. The problem was the smaller pupil, it wasn't dilating. I took him to the vet and the vet could not really find a cause for it. He did some tests, including a blood test (which was normal) and concluded that it was neurological, but didn't have an exact cause. After we went to the vet the eye was swollen, but I think now that it was because of the drops he put in the eye to test it. The eye went back to normal.

Well he's done it again, about a month ago, and last night. Except this is a different eye then it happened with the first time. It may have happened other times over the years too and I just didn't notice. It's very bizarre...the eyes both look normal, his vision seems perfectly normal, it doesn't bother him in the least either. I took a shower and when I came back both pupils were the same size, they are still the same size this morning. He has no other symptoms, he acts great, he and Keva were running laps full speed around the yard last night. Has anyone had anything like this happen before?