She can't remember if I've fed her or not, so quite often she stands on the counter and howls.
She used to not use the litter box and my yard was her toilet.
Then she decided to start using it.
6 months ago she stopped using it.
2 days ago she pooped in my hubby's bathroom.
Now she's using the litter box again, mere moments after I told my housesitter she wasn't going to have to clean out the litter box because my cat didn't use it.
I'm sure it's kitty alzheimers. Or perhaps she made a New Year's Resolution to never go outside again.