Question

what do these animals have that we do not have, besides bigger or multi - chambered stomachs, that allow them to digestion plant material for food? special bacteria in the gut special protist in the gut

Explanation:

Many herbivorous animals have special bacteria or protists in their guts. These microorganisms help break - down plant material (such as cellulose) that humans cannot digest on their own.

Answer:

Both special bacteria in the gut and special protist in the gut.