Premise: Herbivore . This gut flora is made up of cellulose-digesting protozoans or bacteria living in the herbivores ' intestines . Manatees ( family Trichechidae , genus Trichechus ) are large , fully aquatic , mostly herbivorous marine mammals sometimes known as sea cows . Manatees are occasionally called sea cows , as they are slow plant-eaters , peaceful and similar to cows on land .
Hypothesis: Manatees are consumers.
Label: ENTAILMENT