Sudan, the world’s last surviving male northern white rhino, was put to rest at the Ol Pejeta Conservancy in Kenya where he lived for the past 9 years. Now, only two female northern white rhinos remain at the conservancy—the last of their kind on Earth.

Rhinoceroses—of which there are five species—are the second-largest land mammal after elephants. To learn more about Sudan, you can read a lengthy tribute on the Ol Pejeta Conservancy website. He was deeply loved by all at Ol Pejeta especially his caregivers who spent every day with him and developed close relationships with him.