A true marmoset is a small South American monkey that is famous for its distinctive appearance and friendly nature. Synonyms for true marmoset include the pygmy marmoset, the pocket monkey, and the squirrel monkey. These adorable creatures have become popular pets in recent years due to their small size and playful personalities. However, they require specialized care and attention to thrive in captivity. They are social animals that thrive with companionship and need a varied diet that consists of fruits, insects, and vegetables. With proper care, true marmosets make delightful pets that are playful, friendly, and easy to love.