Today in news too cute not to post about: The National Zoo’s two Sumatran tiger cubs took a casual dip in the water for the first time and passed their swim test with flying colors.

The cubs – Bandar, a male, and Sukacita, a female – were born at the Zoo on August 5. They have spent the past few months with their mother and under the care and supervision of the Zoo’s animal keepers. In order to make their public debut on November 18, they first needed to pass a swim test to ensure that they’re ready.

“Tigers are one of the few species of cats that enjoy taking a dip in water,” Craig Saffoe, curator of Great Cats, said. “The moat exists for the safety of our visitors, but it could present an obstacle for young cats. Our job is to make sure that if the cubs venture into the moat, they know how and where to get out. These cubs represent hope for their critically endangered species’ future, so we need to take every precaution to ensure their survival.”

And, as expected, both cubs passed the test and it was adorable. But what would happen if they failed? “We probably would’ve tried again,” Dr. Don Moore, Associate Director for Animal Care, told DCist. “We haven’t had a cat fail a swim test before.”

The National Zoo is the lead partner in the Global Tiger Initiative, and as such, it’s critically important for them to take all the necessary precautions to ensure the continued survival of this species of tiger. According to a press release, there’s an estimated 400 to 500 Sumatran tigers in the wild, and only 65 that are living in accredited zoos in North America.

And as for their names? Well, Moore says that Sukacita was given her name by a private citizen, while Bandar’s name was picked by his keepers, who named him after Bandar Lampung, a southern port city in Sumatra, the area where their species are native to.