Is monkey a ruminant animal

It depends on the species of monkey. Most monkeys have simple digestive tracts similar to those of humans. However, monkey habitats and diets are far more diverse than those of apes. Some monkeys, such as the colobus and langur, have pregastric fermentation and what could be considered a rumen. This allows them to digest very fibrous diets while breaking down toxins that would otherwise render their food inedible. So although classic ruminants, like the cow, are only distantly related to monkeys, parallel evolution has driven the development of similar digestive strategies.