Which type of animal is commonly classified as monogastric?

The correct classification of pigs as monogastric animals is based on their digestive system. Monogastric animals have a single-chambered stomach, which contrasts with ruminants, like cattle and sheep, that possess a complex stomach with multiple compartments designed for breaking down fibrous plant material.

Pigs, being monogastric, have a simpler digestive system that is more efficient for digesting grains and proteins rather than fibrous plants. This allows pigs to thrive on diets that are higher in energy density, composed of grains and high-protein feeds. In comparison, horses also have a non-ruminant digestive system, but they are classified as hindgut fermenters due to their large cecum, which allows them to break down fibrous materials to some extent.