I had two cats, and I was wondering as to why they use one litterbox for only pooping while use the other for only peeing?

They used to poop in the litterbox A (both) and pee in litterbox B (also both) and rarely switch litterbox uses. You see in this case I'm talking about TWO cats who I guess copy each other not just one.

I took them both to the vet and they were fine, nothing wrong with them. I just wanted to know why they do that, if anyone has a hint then please comment.

2 Answers 2


Wild guess -- the boxes are side by side? My friend had the same situation as you do. One day she sent me an unrelated photo, and I saw her litter boxes side by side. Cats view side by side boxes as one big box. Makes sense to use one side for poop and the other for pee. It's what I would do.

  • Well, they were side by side at the start so good guess, but at the time only one cat used to display this behaviour, and the other used only one to do it's business (poop and pee). They had some problems over the litterboxes, so I seperated them (the boxes) and after that the other cat too started to display this behaviour. It peed in the box the other peed in and pooped in the one the other pooped in. Aug 5, 2017 at 13:48
  • Well, I'd consider myself lucky and take advantage of this if I were you. I'd put more absorbent/clumping and nicer smelling litter in the pee box, and more easily diggable and shovelable litter in the poo box.
    – Stig Tore
    Aug 25, 2017 at 12:39

seems normal, my cat/other cats i know of do the same. They probably do it for instinctual hygiene reasons. Maybe less chance of getting a uti if they pee separately to where they poop

  • 1
    Welcome to pets.SE! Because this is not a forum but a question&answers site, and because we handling living beings here, any answer should be based to sources. "Probably" and guessing is not welcome here. Please edit your answer. If it stays like it is, it may be deleted because of bad quality. Jan 24 at 6:16

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