Cat Logic

[Tobi]

The little cat I know does a good dramatic show of avoiding her bed sometimes. I often wonder if it's because she was sick in it during the night....but on examination -no. But a bed she has loved and purred in one minute becomes a no-go area the next day. I sniff at it -and it smells nice. I touch it -and it hasn't got damp. I fluff it up and make it lovely and she will still avoid it and prefer a piece of cardboard instead....then suddenly will make a bee-line for the old bed again, and knead, purr, and fall asleep.
I wonder what the reason is, and investigate, but nothing turns up any clues.
To be honest, I can't say I understand cat logic!