**Squirrel monkeys are omnivorous and they have a mostly vegetarian diet. They mainly eat a variety of fruits, nuts, buds, flowers, insects, spiders, lizards, frogs, bird eggs, and even small vertebrates.
They will also feed on soft tree bark and fungi in the wild. In captivity, they are provided with a balanced diet consisting of vegetables, fruits, grain puff products, boiled eggs, honey, flour, and some insects. **