Watch the trailer for 'Checkpoint Zoo,' a documentary about efforts to save zoo animals trapped by the Ukraine war, EP'd by Leonardo DiCaprio.

The Khao Kheow Open Zoo was overrun with Moo Deng fans on the first of four days of activities marking the hippo’s birthday.

Watch live as Thailand's Khao Kheow Open Zoo celebrates the birthday of baby pygmy hippo Moo Deng as she turns 1 year old.

Frogs bred at the L.A. Zoo are hatched and raised to ensure their development. After reaching maturity, these frogs and ...

Why is the internet obsessed with a viral baby hippo? - Moo Deng the baby hippo became a global sensation after her videos of ...