With three Northern White Rhinos left in the world, the only male is gravely ill, raising fears the subspecies is getting closer to extinction.
Sudan made headlines last year when the Tinder dating app named him the "most eligible bachelor in the world" in a campaign to raise funds to save the subspecies.
At 45, considered elderly in rhino years, the animal lives at a Conservancy in Kenya with two female northern White Rhinos.
They are the last three Northern White Rhinos.
The last male white Northern Rhino is on death watch. With him so goes an entire species.
With the animal on the verge of extinction, the fate of the subspecies rests on Sudan's ability to conceive with the two rhinos.
Source: CNN
