Female cat question

Do female cats menstruate? If so, is it similar to humans? And if so still, is it possible for a female cat that has been spayed to still bleed?

I have three cats in my home, two of which are female, and all three are fixed. Every once in a while I find some rust-colored dried spots of liquid on the kitchen floor or on furniture surfaces that, upon close inspection, look like they can only be blood. It's never a lot, just two or three small drops at a time.

They all get along pretty well - they play together sometimes and rarely fight, so rarely get cuts and scratches on them from each other and I've never seen blood on any of them. They are all three inside cats; sometimes we will let one out in the backyard but stay outside with her.

I'm just baffled as to where this is coming from. One of the females has dark-colored hair and the other has all-white hair, but I never see blood around the backside of the white cat. She has long hair, so if it was a case of menstrual bleeding, if that's possible, there's no way you wouldn't see it on her.

So, is it possible for a fixed female cat to still bleed (if it even works that way)?

No cats have heats. They also don't bleed(that I have ever seen) When in heat more inclined to mate and get pregnant as it attracts boys from all around. As induced ovulators they can get pregnant when not in heat(rolling on ground calling)

I wonder if what you may be seeing is blood from a cat straining to hard-hows the litter box-poop to hard? I tend to see that at some point when my cats get into teens

Everything in litter boxes seems normal...I never see anything that may look like blood when scooping. I'm just totally baffled. Who knows, maybe it's not blood at all. But the dried spots look like something that was a little sticky.

Keep eye on urine/poop and see as a urinary infection could also cause some blood but when I saw it in a cat he was VERY towards the end and noticably ill.

We'd be on the way to the vet with the three to find out if someone has a bladder or urinary tract infection. It can be hard to see blood in pee in a litter box.

It can be VERY hard to see blood in urine in the litter box. I didn't even realize my cat was peeing blood until he finally did it in the kitchen, and he had been in agony and trying to tell us for so long.

I've seen blood on poop before, but sometimes that is hard to see too. But yes, I would definitely say that a vet check is required, all three if you can't narrow it down any further. Vibes and hugs