Many rhinoceroses prefer wallowing in mud to keep their skin cool.

Conservationists traveled across the savanna to monitor the population of black rhinoceroses and protect their dwindling habitat.

Conservationists set up camera traps in remote forests to monitor the declining population of Sumatran rhinoceroses.

Indian rhinoceroses wallowed in the marsh, their thick hides shimmering in the afternoon sun.

The white rhinoceroses in the sanctuary appeared calmer after the new veterinary team arrived.