The zoo held online auctions to celebrate Moo Deng's birthday, with photos, footprints and a food container on offer to raise funds for all the animals under their care.

Moo Deng marked her first birthday on Thursday, drawing crowds of diehard fans even as she left behind the cute animal infancy that earned her worldwide internet fame.

Thousands of excited fans flocked to a Thai zoo on Thursday to celebrate the first birthday of Moo Deng, the adorable baby pygmy hippo that has become a social media sensation.