NZP's Golden-Headed Lion Tamarin Family, by Cohen, Jessie, 1986, Smithsonian Archives - History Div, The first baby golden-headed lion tamarin ever born in captivity in North America was born at the National Zoological Park in August of 1986. Shown here is the father tamarin grooming the mother, who is carrying the baby on her back. They are in the Small Mammal House..