She has been more clingy than usual, preferring to sleep close to me when normally she doesn't. She has also been more jumpy and is more easily startled by a sudden noise. Other than those two things she is fine though. Eating, drinking, bathroom, and play habits are all normal. She's not lethargic or less active but seems a little mopey. I wonder if the chilly, rainy weather that has come with Autumn is causing it.