The main diet of a gorilla consists mainly of plant material. Gorillas are primarily herbivores and consume a variety of leaves, stems, fruits, and flowers. Their diet can vary based on the species and habitat; for instance, Western lowland gorillas tend to eat more fruit compared to Eastern gorillas, which focus on tougher vegetation. They typically eat a large volume of food daily, averaging between 30 to 50 pounds, to support their size and energy needs. This plant-based diet is rich in fiber but low in calories, prompting gorillas to spend a significant portion of their day foraging and feeding.