 Grazing animals are able to obtain B12 when they ingest bits of soil with the grass, as the vitamin and B12-producing bacteria are found in the soil and attached to the roots of the plants.After ingesting the vitamin, it is stored in the muscle and liver tissues of the animal, and subsequently passed on to the next level of the food chain.As no animal is able to synthesize cobalamin endogenously, cobalamin should be fortified and supplemented in plant-based diets.