384 mammal species, with at least 109 endemics are to be found in the Mata Atlântica. Bats (Chiroptera) are by far the most abundant group with 122 species or 31 % of the terrestrial mammals (262 species). In Europe, bats account for only 1-2% of the total number of terrestrial mammals. At Fazenda Bom Pastor, a range of mammals were spotted directly or their presence was confirmed by footprints. However, it was only possible to take photos of a small number of them. Golden-headed lion tamarins (Leontopithecus chrysomelas) are of particular importance to AMAP. AMAP devotes its attention to their long-term survival. The golden-headed lion tamarins at Fazenda Bom Pastor are part of a monitoring project, aiming to secure their long term survival in the Cabruca Agroforestry System. A group of currently 8 individuals is being monitored using collar transmitters. A second marmoset species occurring at Fazenda Bom Pastor are Wied’s Marmosets (Callithrix kuhlii).