Question

Why is lenght of small intestine is longer in herbivores and shorter in carnivorous?

Answer 1

Herbivores eat leaves and hence they need to digest cellulose since it is tough for them to digest it they have a longer small intestine so as to properly absorb nutrients

Answer 2

Herbivores eating grass need a longer small intestine to allow the cellulose to be digested. Whereas Meat is easier to digest, hence carnivores like tiger have shorter small intestine.