Animal Kingdom doubled its Sumatran tiger population with the birth of a pair of cubs, Disney announced Wednesday.

“Sohni and her cubs are bonding well,” according to the announcement on the Disney Parks Blog, which was sparse on details about the cubs’ size, sex and actual date of birth. 

The tigers are being watched around-the-clock by Disney’s animal care experts and veterinarians.

Sohni and the cubs’ father, Malosi, were brought to the theme park in 2014 to expand its breeding program.

Sumatran tigers are critically endangered with an estimated 500 left in the wild. They’re only found on the island of Sumatra in Indonesia, where the species are threatened by habitat loss, poaching, and illegal wildlife trade.

The Disney Conservation Fund is working with the Wildlife Conservation Society on its Reverse the Decline initiative to develop strategies for save the tigers. The tiger cubs were bred  through the Species Survival Plan, which is overseen by the Association of Zoos and Aquariums and ensures responsible breeding.

A Sumatran tiger cub was born July 11 at the Smithsonian’s National Zoo in Washington D.C.

Guests can expect to see Sohni and her cubs on the Maharajah Jungle Trek within the next several months, according to the release.