Adoring fans from around the world converged in Thailand this week to celebrate the first birthday of Moo Deng, the baby pygmy hippo who became a social media sensation. John Yang reports.

Thousands of fans have flocked to a Thailand zoo to celebrate the first birthday of Moo Deng, the baby pygmy hippo that's ...

A male pygmy hippo – the same species as Thailand's viral Moo Deng – was born at Tanganyika Wildlife Park in Goddard, Kansas ...

Oklahoma City native Gayla Peevey speaks about her iconic Christmas song and decades-long bond with the OKC Zoo as a statue is to be unveiled in her honor.

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The initial position of all the hippopotamuses has been generated, and for this initial position, the objective function is evaluated. Phase I is an exploration phase in which the hippopotamus ...

Moo Deng, a baby pygmy hippo, became an overnight sensation online. Videos of her were watched by millions. But conservationists say that popularity hasn’t resulted in any change on the ground ...

Wildlife groups argue the U.S. Fish and Wildlife Service to put common hippos on the endangered list to protect against U.S. trade in body parts.

The Metro Richmond Zoo in Moseley, Virginia, has revealed on TODAY the name of the baby pygmy hippo born there in December.

A female pygmy hippopotamus calf was born at the Metro Richmond Zoo in early December, marking the third calf of the endangered species to be born at the zoo in the last five years, officials said.

The Richmond Metro Zoo announced on Dec. 24 the birth of a baby pygmy hippopotamus at their facility. The baby was born on Dec. 9 and is the third calf for the pygmy hippo parents Iris and Corwin.