Animal lovers are mourning the of Sudan the rhinoceros. Sudan, 45, was the world's last male northern white rhino. He died at a in Kenya after "age- complications". Officials say his "worsened significantly" and he was too to stand. His had weakened and his skin had "extensive ". The zoo's director called Sudan's death, "a symbol of human for nature". He said who knew Sudan was sad.
The northern white rhino have been hunted to near- because of the value of their . There were more than 2,000 in the 1960s. The northern white rhinos today are Sudan's and granddaughter. They live in a zoo so they will be . Conservationists want them to produce to keep their going. In vitro fertilization could be used on . The zoo needs $9 million to fund the conservation .