Beer, as all alcoholic drinks, is made by fermentation caused by bacteria feeding on the yeast cells, then defecating.
Human beings are the only mammals that drink milk beyond infancy.
In the movie, The Shawshank Redemption, when all of the prisoners are on the roof drinking beer, notice the containers. Their drinking bottles of beer. The movie was set in the 30s. In Bavaria, beer is not an alcoholic drink. The average production bee hive can have as many as 60,000-120,000 bees.