Baby marmoset monkeys for adoption. Marmosets are more like humans than any other animal. They are the closest to us on a genetic level. So when you get a marmoset monkey, it’s very important to understand their personality. They basically have the intelligence of a 4 year-old and they can connect with you on an emotional level. My monkeys are very friendly with children and other pets. they are also very intelligent, and obedient and are all vaccinated and well come with a health certificate.