My rat Wesley has always been a little more shy and skitzo compared to my rat Farley but it seems like he's worse now. When he comes out of the cage he stays on top of the cage and by the walls, he rarely hangs out in the middle of the room. A lot of times he doesn't even come when I have a treat. I thought this might be because I don't get them out as much or they might have had a bad experience with our cat, who just started going upstairs and in the room where the rats are. I also noticed today that when he came down from the cage he was making squeaking noises, I think when he was breathing. It didn't seem like a need for concern because like I said, Wesley has always been a little skitzo. But now that I hear his breathing is weird, I'm wondering if this may be a health issue? Does anyone know any illnesses like this? Could it be a respitory infection?