The Kenyan official made the statement during Sudan's, the world's last male northern white rhino, funeral on Saturday.
Johannesburg breeder John Hume says that making rhino horn more easily available will deter poachers from killing the rare animals.
The largest study of Javan rhinos suggests these beasts are hovering on the edge of extinction.
An international ban on trading rhino horn remains in place.
But experts worry legal schemes can't overcome poaching and illegal profits.
It doesn't exactly match historical description of unicorns, however.
The Cincinnati Zoo is just awaiting final approval from U.S. Fish and Wildlife.
Rhinos were declared extinct in Zambia in 1998, ravaged by poachers. Today they are back and living in the wild once again.