In the wild, rhesus monkeys thrive on fruits, seeds, roots, herbs and insects. In captivity, monkeys primarily eat monkey chow, and an array of fresh, seasonal fruit, vegetables and nuts once to twice a week to provide them with variety and to supplement their diet (photo below). Outdoor monkeys also forage in the grass for roots, seeds, and insects, and are provided with a daily mixture of seeds and oats scattered in the grass to replicate normal foraging behaviors. Indoor animals also receive seeds, oats, and fresh fruits and vegetables, in addition to monkey chow and specialize enrichment foods (one example pictured here).