Examples of monogastric omnivores include humans, pigs, hamsters and rats.
However, their ability to extract energy from cellulose digestion is less efficient than in ruminants.
[3] These are subdivided into two groups based on the relative size of various digestive organs in relationship to the rest of the system: colonic fermenters tend to be larger species such as horses and rhinos, and cecal fermenters are smaller animals such as rabbits and rodents.
[4] Great apes derive significant amounts of phytanic acid from the hindgut fermentation of plant materials.
[2] A monogastric digestive system works as soon as the food enters the mouth.