Millions of people around the world fell in love with Moo Deng, the tiny pygmy hippo whose adorable videos turned her into one of the internet’s biggest animal stars.

But this week, fans were left shocked and angry after a man was arrested for climbing directly into her enclosure at a zoo in Thailand.

According to officials at Khao Kheow Open Zoo, the Thai man allegedly entered the enclosure while no zoo keepers or visitors were nearby. Security footage later showed him standing dangerously close to Moo Deng and her mother, Jona, while appearing to film or take photos using a tablet.

The incident reportedly lasted only a minute or two before staff noticed the intruder and called police. Zoo officials later confirmed the man was arrested for trespassing.

While Moo Deng was not physically harmed, officials said the young hippo appeared startled by the encounter and would be monitored closely afterward.

For many fans online, the footage was heartbreaking to watch.

Moo Deng is not just another zoo animal to people anymore.

Since her birth in 2024, the playful pygmy hippo has become a global social media sensation, attracting millions of followers who adore her tiny size, funny expressions, and energetic personality. Her popularity also helped bring worldwide attention to endangered pygmy hippos, a species with only a few thousand remaining in the wild.

But with fame has also come growing concern.

In recent months, many animal lovers have worried that Moo Deng’s viral popularity could attract dangerous behavior from visitors desperate for photos, attention, or internet clout. Online communities reacted angrily after the enclosure incident, with many calling for stricter zoo security and stronger punishment for anyone who puts animals under stress for content.

One comment shared widely online read:

“She’s not a toy or a photo prop. She’s a baby animal who deserves to feel safe.”

The zoo has since reportedly increased security measures around Moo Deng’s enclosure following the incident.

And for millions who love the tiny hippo, the situation served as an emotional reminder of something important:

Just because an animal becomes famous online does not mean it stops deserving peace, safety, and respect. 🦛💔