Woke up this morning to check on/feed the chinchillas because I fell asleep super early and didn't do it last night like I normally do. I usually leave at 7am so I never see them at this time of morning, so I think I woke them up. None of them were too energized, but one had one ear perked up and one laid back. I touched his ear and it didn't bother him or anything, but he didn't pick it up. I also noticed one of my other chins (in a different cage) had one ear down too, but I'm almost certain that he was half asleep still. I'm kind of worried. Is this normal behavior or indicative of something else? What else should I be looking out for?