The zoo's four youngest African lion cubs made their debut at the National Zoo Friday afternoon.
So far, the cubs have passed their swim test, received all their vaccinations and have started getting friendly with each other as well as their mom and dad. The cubs have yet to be named, and animal care staff use unique shave marks on their hips and shoulders to tell them all apart.
The cubs have a pair of slightly older half-siblings, who were born in January. All six cubs are now on exhibit. The zoo says the pride will be on display weather-permitting.