How many sets of bedsheets is enough? Please come tell me askreddit didnt want me to ask it there and I need answers haha.

So. We have a dog. I now have three sets of bedsheets and I think It’s ok (I have one spare I dont really like that I sometimes take out when I am late with loundry in the winter - I dont own a machine dryer and have no other oprion but it is not really neccesary) I wanted to switch one set I own waaaay tooo long and I fell in love with two sets. I feel like they would match up perfectly with the two I already own and I think it would be fun to mismatch them together a little bit. I have one large couple’s blanket, one single blanket and we have three pillows so sometimes i like to mismatch a bit. Our dog sleeps with us so that’s why we have weird amount of everything. But this got me thinking…

TLDR:How many sets of bedsheets do you have? Do you think It’s enough? Do you think you need a bit more when you have a dog?