What is a common characteristic of ruminant animals such as sheep?

Ruminant animals, including sheep, have a unique digestive system that enables them to break down cellulose through a specialized fermentation process. This process occurs in the rumen, which is a part of their stomach, where microbes help to digest fibrous plant materials that are high in cellulose. This ability to digest cellulose is crucial for ruminants, as it allows them to efficiently utilize grass and other roughage as a primary food source, converting it into energy and nutrients that support their growth and overall health. This characteristic is a defining feature of ruminants, distinguishing them from non-ruminant animals that do not possess a similar digestive capability.