Two clouded leopards, a male and a female, were born at the Denver Zoo this month.

The unnamed cubs, born March 14, are the first of their species born at the zoo, according to a news release.

The cubs’ mother, Lisu, gave birth to the pair in a private stall. Lisu did not tend to the cubs, however, and zookeepers moved them to another building to provide for their care. Zookeepers believe because first-time mother Lisu was hand-raised, she “lacks the experience to rear her own cubs.”

VIDEO: Denver Zoo welcomes first clouded leopard cub births.

These are the first cubs for Lisu and her mate, Taji.

Clouded leopards can be found in the wild in Southeast Asia, in southern China, parts of Nepal, India, Burma and from Indochina to Sumatra and Borneo, the news release said.

The Denver Zoo cubs will “remain behind-the-scenes until they grow older,” the zoo said.