Conservationists and animal age captivity condition conservation continually director last loss lovers muscles nature near offspring poor species strong techniques value wild young are mourning the age captivity condition conservation continually director last loss lovers muscles nature near offspring poor species strong techniques value wild young of Sudan the rhinoceros. Sudan was the world's age captivity condition conservation continually director last loss lovers muscles nature near offspring poor species strong techniques value wild young male northern white rhino. Sudan, 45, was put down at a zoo in Kenya after " age captivity condition conservation continually director last loss lovers muscles nature near offspring poor species strong techniques value wild young -related complications". He had been in age captivity condition conservation continually director last loss lovers muscles nature near offspring poor species strong techniques value wild young health due to his old age. Officials say his age captivity condition conservation continually director last loss lovers muscles nature near offspring poor species strong techniques value wild young "worsened significantly" and he was not age captivity condition conservation continually director last loss lovers muscles nature near offspring poor species strong techniques value wild young enough to stand. His age captivity condition conservation continually director last loss lovers muscles nature near offspring poor species strong techniques value wild young had deteriorated and his skin had "extensive wounds". The zoo's age captivity condition conservation continually director last loss lovers muscles nature near offspring poor species strong techniques value wild young said: "Sudan's death was a cruel symbol of human disregard for age captivity condition conservation continually director last loss lovers muscles nature near offspring poor species strong techniques value wild young and it saddened everyone who knew him." Hunters have hunted the northern white rhino to age captivity condition conservation continually director last loss lovers muscles nature near offspring poor species strong techniques value wild young -extinction. There were more than 2,000 in the age captivity condition conservation continually director last loss lovers muscles nature near offspring poor species strong techniques value wild young in the 1960s but their numbers age captivity condition conservation continually director last loss lovers muscles nature near offspring poor species strong techniques value wild young fell because of the age captivity condition conservation continually director last loss lovers muscles nature near offspring poor species strong techniques value wild young of their horns. The only northern white rhinos alive today are Sudan's daughter and granddaughter. They live in age captivity condition conservation continually director last loss lovers muscles nature near offspring poor species strong techniques value wild young so they will be protected. There are hopes they can produce age captivity condition conservation continually director last loss lovers muscles nature near offspring poor species strong techniques value wild young to keep their age captivity condition conservation continually director last loss lovers muscles nature near offspring poor species strong techniques value wild young going. In vitro fertilization age captivity condition conservation continually director last loss lovers muscles nature near offspring poor species strong techniques value wild young using semen from other dead rhinos could be used with Sudan's age captivity condition conservation continually director last loss lovers muscles nature near offspring poor species strong techniques value wild young . The zoo wants to raise $9 million to fund the age captivity condition conservation continually director last loss lovers muscles nature near offspring poor species strong techniques value wild young project.