On Oct. 7, the National Zoo’s Small Mammal House team celebrated the arrival of golden-headed lion tamarin twins! They are the first of their endangered species born at the Zoo in 16 years.

Get to know the mischievous and curious babies from keepers Mimi Nowlin and Maria Montgomery: https://nationalzoo.si.edu/animals/news/meet-our-golden-headed-lion-tamarin-twins