The **easiest monkey to have as a pet** is the capuchin monkey. These monkeys are native to Central and South America, and are small in size, making them ideal for keeping as pets in a home environment. Capuchins are highly intelligent and trainable monkeys that can even learn simple human words.
They are very energetic animals, and need plenty of stimulation to keep them busy. As long as you are able to provide them with enough attention, enrichment, and veterinary care, keeping a capuchin monkey as a pet is relatively low-maintenance.