Mother Sarani, 4, and her 5-year-old mate, Sabu, arrived at Brookfield Zoo in October 2011 from Tautphaus Park Zoo in Idaho and Cape May County Park & Zoo in New Jersey, respectively. Their pairing was based on a recommendation from the Association of Zoos and Aquariums' Snow Leopard Species Survival Plan, a population management and conservation program.
The pair had their first cub, Everest, in Brookfield Zoo in 2013. He lives at Lincoln Children's Zoo in Lincoln, Nebraska, on a breeding loan also based on a recommendation from the SSP.
Snow leopards are an endangered species, according to the International Union for Conservation of Nature