A. Your kitty is obviously not feeling well, and the signs are not very specific, so I cannot begin to guess even, what could be wrong. Therre are a few diseases that typically show up in older kitties, such as arthritis, which can make them sleep more because they are reluctant to move, and also lose their poop, because they are afraid to go to the box and squat because of hip joint pain. I suggest you take her to a vet for a blood panel and ask your vet about arthritis medication for your kitty or pain medications if indicated.
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