How does it work that we eat few times a day, but usually we poop only once?
Is the colon somehow programmed to buffer the waste until the time is up and then dumps it all further?
Got this thought when observing my dog who eats twice a day (morning and evening) and more or less poops twice a day (morning and evening).
Humans have a really good digestive tract for getting nutrients out of food. So you take a lot of the mass of the food you eat and use it in your body as energy or building material. As such your poop has significantly smaller mass because it’s made up of all the stuff you’re body can’t use after it’s pulled out so the good bits.
As for dogs my understanding is they have a shorter digestive tract to allow them to eat the nasty stuff does seem to like without getting sick so they are probably less efficient at removing nutrients and poop more proportionally to what they eat.