Last year, Sudan was listed as “The Most Eligible Bachelor in the World” on the dating app Tinder.
Sudan "significantly contributed to the survival of his species as he sired two females," the conservancy said.
Kenya's Ol Pejeta Conservancy said Thursday that Sudan was struggling despite 24-hour care by veterinarians.
Sudan appeared to recover well from an infection that developed on his back right leg at the end of 2017 but another, deeper infection was recently discovered in the same area, the conservancy said.
Efforts to safeguard the subspecies by moving a small number to Kenya collapsed.In this Friday, July 28, 2017 file photo, wildlife ranger Zachariah Mutai takes care of Sudan, the world's last male northern white rhino, at the Ol Pejeta Conservancy in Laikipia county in Kenya.The health of 45-year-old Sudan is deteriorating and his minders said Thursday, March 1, 2018 that his "future is not looking bright." (AP Photo/Joe Mwihia, File) The 45-year-old rhino named Sudan, listed as "The Most Eligible Bachelor in the World" on the Tinder dating app last year as a fundraiser, lives with the last two female northern white rhinos.Sudan was being treated for age-related complications that had affected his muscles and bones and also gave him extensive skin wounds.Sudan had previously lived at the Dver Kralove Zoo in the Czech Republic before being transported to Ol Pejeta Conservancy, about 250 km (155 miles) north of Nairobi, where he lived with the last two females of the same species, his 27-year-old daughter Najin and 17-year-old granddaughter Fatu.
"He was a great ambassador for his species and will be remembered for the work he did to raise awareness globally of the plight facing not only rhinos, but also the many thousands of other species facing extinction as a result of unsustainable human activity," said Richard Vigne, the group’s CEO.