they have to use a special tool, it's known as an ahbesian. it's basically a pole with a grabber on the end. There's a store right down the way that sells centaur supplies, "Ahbesians and such"
Centaur droppings and horse dropping could be very different too because of diet.
Centaurs may not be as okay with just leaving their shit on the ground, so you could see hoofprints around a little mound where the centaurs cover up their shit.
>he doesn't know how to use the 3 shells.
They use their tails.
>Then what do they clean their tails with?
It's a never ending cycle of shit.
Could you imagine if they did human dumps? 2-3 meter long turds just rolling out, or when they've eaten the wrong thing, a firehose spray of shit.
They used sponges, wool, and rosewater if they could afford it. Broad-leaved plants if they couldn't.
Rich Romans sometimes used goose or swan feathers, still attached to the pliable neck. Not Greeks, I know, but still interesting.
The horse anus is a marvel of evolutionary biology.
Like most mammals, rhythmic contractions of the bowels move the feces up to the end of the gut to be expelled.
What sets the horse anus apart is the bafflingly complex autonomic contractive motion of 4 muscular rings which function like sphinctoral guillotine. As the feces is squeezed out, the rings expand and the outermost ring is retracted into an interior skinfold resembling the human foreskin, leaving an interstital tissue fold to open air.
The two inner rings then contract, and push apart, severing the horse feces cleanly, allowing to drop free as the outer ring folds back through the interstital flap, creating a intrinsic wiping motion with the fourth ring as it contracts back into the horses rectum.
This advanced biological mechanism is so effective that many industrial companies have copied Nature's design for self-cleaning viscus liquid dispensers housed within complex machinery.
I don't really know if I want this to be true or not.
I don't even know what to say.
Have your in game Centaur culture develop so it's polite for friends and family to point out or wipe off poo. Imagine how sturdy their toilets need to be. If they use a human outhouse do they get embarrassed from their front half sticking out.