The large litter is quite uncommon for Siberian tigers, which typically give birth to two to four cubs.
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Siberian tigers are the largest cats in the world, averaging 11 feet in length. They are one of six tiger subspecies remaining, but there are only about 500 of them left in the wild, according to National Geographic.
Siberian tigers primarily live in eastern Russia, but also can be found in portions of China and North Korea. Their population is threatened by habitat loss and poaching, and they have a grim 50% survival rate in the wild.
The cubs were born to a tiger named Nadya on May 2 at Six Flags Wild Safari. The litter included one male and four females, doubling the park’s Siberian tiger population.
“Nadya’s cubs help ensure the survival of this precious species for at least two more decades,” Six Flags veterinarian Ken Keiffer said.
The adorable cubs recently underwent their three-week health checkups. Four of them weighed 6 pounds, a healthy amount. One of the females weighed just 2 1/2 pounds.
Although the little girl’s weight is typical for a tiger’s birth weight, she has spent some time on an incubator and was bottle fed around-the-clock. She is currently thriving, Six Flags vets said.
The other four cubs can be seen in the coming weeks in the Tigris Asiana section of the Wild Safari Drive-Thru Adventure.
Visitors also can get a unique view of the cubs and their mother by taking the park’s VIP Giraffe Encounter tour, in which guests ride open-air trucks through seven portions of the Wild Safari, or by purchasing tickets to the Safari Overnight Campout being held July 15-16.
The cubs’ mother, Nadya, was raised in the park’s Wild Safari alongside an African lion. The litter was Nadya’s third at the park.
Nadya’s first litter included “Carli,” a cub named after New Jersey native Carli Lloyd, a former star on the U.S. women’s national soccer team. Her second included “Julie” and “Heather,” cubs named after USWNT soccer stars Julie Ertz and Heather Mitts Feeley.
It has not yet been revealed whether the five newest additions to Nadya’s family will join the “team” by continuing the tradition of bearing the names of U.S. soccer stars.