Marmoset Marmosets are New World monkeys, which means they have prehensile tails and are dichromatic

Marmoset

Marmosets are New World monkeys, which means they have prehensile tails and are dichromatic (they see only two colors). Old World monkeys like chimps, gorillas, and orangutans are trichromatic and can see in “full” color like humans. Marmosets live in the upper tree canopies of South American rainforests and eat insects, fruit, and leaves. Their long lower incisors help them chew holes in tree trunks to access carbohydrate-rich tree sap. Marmosets lives in large family groups and females commonly give birth to fraternal twins. 

Photo credit