by looking at the pictures i was also goin to suggest cherry eye looks like i got there too late to tell you though..poor boy i saw it on a animal abuse show where 2 boxer pups had it in both there eyes but they were fine after surgery, lets hope it dosent spread, seems like its most common in puppies thank goodness its not life threatning and is pritty easy to fix i saw them do the surgery it looked so easy to fix, anywho good luck