Why do deer, horses and cows all have different poop when they all eat grass?

Question

This was in a joke I read and now I want to know the answer. If they all eat the same grass then why do deer poop pellets, cows flat patties, and horses those weird grass clumps?

Answer 1

They are all different species. There internal digestive systems use the nutrients in grass differently. The waste therefore has differing componets and therefore look and smell different. If a dog eats a steak and a human eats a steak again different nutrients are required.

Answer 2

Poop of every animal or human regardless of their diet will be different. Its because of the digestion process that this happens. Every being has different number and different type of bacteria in the stomach also someone maybe has a stronger stomach acid than others, plus every living thing has a different colon and all that dictates how the poop will look like. No one poops the same.

Answer 3

They are different species and are different internally. Their digestive systems may work differently. For eg cows are rumans but horses are not.