little creatures called mico and mico estrela, known as common marmoset and black-tufted marmoset in english respectively, are a type of monkey that can be found in places like pão de açucar and morro dois irmãos - its presence in the marvelous city is evident, but are originally from the northeastern and central-western regions of brazil.

brought by humans to the tijuca forest in rio de janeiro in the early 20th century, overtime they have expanded to other florested areas in the city and grown in population - today they are an integrated part of the city and are commonly seen in many areas.