I have a cat who is approx a year old, she is usually a very active cat, but in these past few days she has totally changed, she is very inactive, doesnt go outside, doesnt eat much and spends most of her time lying in dark places indoor. I have also noticed that she has a very strange thing on her right eye, it looks like a 2nd eyelid, im not too sure what all this means/is... any ideas??
thansk