The two youngsters — which have not been named yet and whose gender has not been determined because zoo keepers do not want to separate them from their mothers — are a Coquerel’s sifaka and collared lemur, who are both unique to the African island.
"Both the sifaka and the collared lemur are seeing dramatic declines in population due to loss of suitable habitat," read a statement by the Wildlife Conservation Society, which overseas the zoo. The Coquerel's sifaka is an endangered species and the collared lemur is listed as vulnerable, according to the WCS.
The lemurs spend most of their time in the forest canopy, using their strong legs to leap between trees.
The "Madagascar!" exhibit, which has been going year-round since 2008, features five types of lemurs, as well as a Henkel's Leaf-tailed Gecko, Madagascan Tree Boa and Madagascar Hissing Cockroach, the exhibit's website said.
For operating hours and ticket prices you check out the zoo's website: http://www.bronxzoo.com/.