No, gorillas generally do not eat other monkeys. Gorillas are primarily herbivores, which means their diet consists mainly of plant material. They eat leaves, stems, fruit, and flowers, and they have a digestive system that is well-suited for breaking down tough plant fibers.
While gorillas are strong and capable of hunting small animals, they tend to prefer a vegetarian diet. There are rare occasions where gorillas may ingest small amounts of animal protein, but this is not a significant part of their diet and isn’t common behavior. In contrast, some other primates, like chimpanzees, are known to hunt and eat meat, including other monkeys. This difference in dietary habits reflects the size and social structure of gorillas and their foraging behavior.