I found this forum and joined so I could get your opinion on a health issue Lulu was going through a couple a weeks ago. She's well now, but she is still doing something--or should I say NOT doing something--that started with that illness. I would like to know what ya'll think. She is 4 yrs old this month and all her life she has slept under the cover all night long. I mean deep sleep as in someone could break in and come in our room and she would not hear them sound asleep under the cover. Now she will NOT sleep under the cover at all. We turn the heat down at night because we are under the covers and she was waking us up halfway through the night and I figured out she was cold, so I turned heat up. I have put her bed in the bed with us and she is now sleeping through the night sometimes in the bed--sometimes not, but never under cover. I worry that maybe something has happened and she can't breathe under the cover any more. Do they just change out of the blue? Should I not worry and go with the flow? Has anyone else gone through this with an older chi? Please let me know. Thanks.