03/20/2013 at 12:00 PM EDT
Look who's earning his stripes!
Meet Castro Jr., the Sacramento Zoo's latest (and, dare we say, cutest) Sumatran tiger addition, who was born March 3.
"The birth of any Sumatran tiger is a great contribution to this critically endangered species," said Mary Healy
, zoo director. "We are especially excited for this birth because it is the first time we have had a camera in the den, allowing zookeepers and veterinarians to keep a close eye on [mother] Bahagia and her cub."
Fewer than 500 Sumatran tigers are thought to live in the wild, and about 200 live in zoos around the world.