What is the UDDER and and the rumen in animals?

The udder is a glandular organ in female mammals, primarily responsible for milk production and secretion. It consists of multiple mammary glands and is crucial for nursing young. The rumen, on the other hand, is a specialized stomach chamber in ruminant animals (like cows and sheep) that facilitates the fermentation and breakdown of fibrous plant material, allowing for efficient digestion of cellulose. Together, these structures play vital roles in the nutrition and reproductive success of the animals that possess them.