Final answer:
Ruminants like goats and cows have sacculated stomachs, which are multi-chambered, allowing for the effective breakdown of cellulose and synthesis of proteins through microbial action in their digestive system. Other ruminants include deer and giraffes.
Step-by-step explanation:
Animals with sacculated stomachs or multi-chambered stomachs are known as ruminants or pseudo-ruminants. These animals, which include goats and cows, have specialized digestive systems with four stomach chambers: the rumen, reticulum, omasum, and abomasum. The food undergoes a process where it is first stored and partially digested in the rumen and reticulum, then regurgitated as cud and rechewed. This enables effective digestion of cellulose-rich plant material. Other ruminant animals with similar digestive systems include sheep, deer, and giraffes.
Multi-chambered stomachs facilitate the breakdown of tough plant fibers and enable the synthesis of proteins, with the help of bacteria and protozoa that reside in these stomach chambers. The additional chambers provide the necessary environment for these microorganisms to thrive and assist in the digestion process. Non-ruminant vertebrates often have a single-chambered stomach, known as a monogastric stomach, or other adaptations such as the gizzard found in birds.