A pygmy hippopotamus was born at the San Diego Zoo, the first successful birth of the endangered species there in more than three decades.

The zoo announced the birth of the male calf last Friday in recognition if Endangered Species Day, releasing a video of the little guy frolicking alongside his mother, Mabel.

“What better day than Endangered Species Day to announce the birth of our first successful pygmy hippo calf in 30 years!?” the zoo wrote on Facebook.

Four-year-old Mabel gave birth to the 12.4-pound calf on April 9, but the zoo held off on announcing the good news to ensure he was deemed healthy by vets.

“The pygmy hippo calf is meeting and surpassing the milestones that wildlife care specialists watch for in a young pygmy hippo, including the ability to go underwater,” the zoo said.

Fewer than 2,500 pygmy hippos now remain in their West Africa habitats and the species are threatened by logging, farming and human settlement in their habitat, the zoo said.