Last clopper on Earth

Thanks for making me curious enough to do some research on the subject. Pretty much anyone (both humans and horses) can pee without pooping, so it's safe to assume Dash can too. Humans can't poop without peeing because the external anal sphincter is large enough that if it relaxes, the entire pelvic floor goes with it. No idea if horses have the ability, but they have incredible muscle control down there (in the vagina anyway) so I guess it's possible. In any case, this is a magical talking pony with a degree of super strength, so who knows?