Rhinoceros

Sophisticated criminal gangs are killing the threatened animals for their horns.

India's Manas National Park welcomes its newest inhabitants.

New exhibit of African animals at the Houston Zoo opens.

Poachers are wielding all kinds of new technologies to snag rhinos without getting caught, including silenced weapons and night-vision goggles.

Female white rhino gives birth to baby after artificial insemination.

The skull of a woolly rhinoceros suggests the beast was an efficient grazer.

After nearly disappearing, African rhinos have made a healthy recovery.

A new study likens a rhino's horn to a sharpened pencil, with a hard core and a softer exterior that curves as it grows and wears over time.

Only a handful remain, and photos like this will help scientists learn how to conserve the beasts.

A group in the island’s central region is reduced to just 13.