* Primarily Fruits: Many monkey species are frugivores, meaning they primarily eat fruits. This includes monkeys like baboons, capuchin monkeys, and howler monkeys.
* Leaves and Insects: Some monkeys, like colobus monkeys and spider monkeys, are folivores, meaning they eat a lot of leaves. They also often consume insects for extra protein.
* Omnivores: Other monkeys are omnivores, meaning they eat a mix of plant matter and animal products. This includes species like macaques and chimpanzees, who eat fruit, leaves, insects, and sometimes even small mammals or birds.
It's important to note that a monkey's diet will also be influenced by:
* Geographic location: Monkeys in different regions have access to different food sources.
* Seasonality: Food availability can change drastically throughout the year, leading to dietary shifts.
* Individual preferences: Even within a species, individual monkeys may have different preferences for specific foods.
So, while there is no single "main" food source for all monkeys, a combination of fruits, leaves, and insects is common across many species.