The fraternal twins, Masco (a male) and Tonga (a female), were born April 5, and are officially making their debut at the Central Park Zoo. Rare twin black-and-white ruffed lemurs at the Central Park ZooThe International Union for Conservation of Nature (IUCN) classifies them as Critically Endangered. Since the Central Park Zoo first acquired black-and-white ruffed lemurs in 2008, a total of eight monkeys have been born. Black-and-white ruffed lemur pup is held during a routine veterinary exam at Central Park Zoo in April 2026. Koa is the leader of Central Park Zoo’s troop, and the twins’ father Milo is her chosen dominant male.