What do ruminant animals eat a lot of?

Ruminant animals, such as cows, sheep, and goats, primarily consume large amounts of fibrous plant material, particularly grasses and other forage. Their unique digestive system allows them to break down cellulose through a process of fermentation, facilitated by specialized stomach compartments. This enables them to extract nutrients from tough plant fibers that many other animals cannot digest effectively. In addition to grasses, they may also eat leaves, stems, and other plant parts.