Monkey is a member of the Haplorrhini suborder and the simian infraorder that includes Old World monkeys and New World monkeys (excluding apes and humans). Monkeys are highly intelligent.
In the wild, monkeys spend most of their day foraging for food. They will eat almost anything to obtain the calories, vitamins and minerals they need. This natural foraging behavior also helps them maintain an even energy intake and expenditure ratio that keeps them in balance. In cities, where they are not in danger of being killed by a predator, monkeys often seek out human food sources like garbage and waste disposal systems to get the food they need. They are even known to cause car accidents by spending time waiting for food near roads.
While monkeys are omnivorous, their diets tilt heavily toward plant matter. The plants they eat provide fruit sugar, carbohydrate, fiber and a little protein. The New World monkeys, for example, eat about 95% plant matter and only 5% meat and invertebrates.
In captivity, it is important to keep this balance in mind for the monkeys you care for. If you only feed them bananas and other fruits, they will not get the nutritional balance that they need. To help ensure that your monkeys get a variety of nutrients and prevent overfeeding, try to mix up the foods you feed them. For example, try to add more leafy greens like kale and spinach to your monkeys’ diet.