Hi! My Guinea pig is a little over 5 years old and she's always been in good health. A few days ago, we started noticing her left eye and the white fur around it started getting a little pink/red. Today I was looking carefully and it looks like her eye was watery as well. She is acting normal and still eats, drinks, and squeals when we bring her food. She has been resting a lot the past few months but she is getting old. I am concerned because what I have been reading online does not sound good to me. She is acting very normal, has anyone noticed anything like this before in their pigs? It is only 1 eye and sometimes it seems like the eye is half shut but it's usually all the way open.