If he is in bed alone, he always manages to somehow turn the doona upside down, and back to front. I have to have it the right way up, so I'll move it around until I'm happy, even if it wakes him
Wow, I'm not the only one!! I don't know how they manage to do that!

In summer, when there are two of us in there - I change the bed twice a week - if there are the white sheets on and the cat has decided the bed is where she wants to sleep (like she doesn't have enough beds in this place to sleep - as well as a multitude of chairs!) then every couple of days (she's black)
We have the cat issue here too! Our cat is also black and sheds like crazy. I can't believe how many sleeping spots she has claimed: DS's cot, snugglebed, our bed, the spare bed, the couch, not to mention...she has her own bed! I've thrown out so many pillows because she's covered them in fur beyond the powers of washing and the lint brush. We are constantly washing linen in this house because of the black fur - it is everywhere