Joseph Wachira, a keeper at the Ol Pejeta Conservancy in Kenya, says goodbye to Sudan before he died in 2018. Sudan was the last male Northern White Rhino in existence. He became, for a while, one of the most beloved animals on the planet. Weighing 2,000 pounds, he was as docile as a Golden Retriever. People came from all over the word to see him, to touch him. Then they would return to their cars and cry. He is survived by Najin and Fatu, his daughter and granddaughter, the last female Northern White Rhinos.