South African game parks are poisoning the horns of live Rhinos in order to save them from extinction.
They're injecting them with a dye to make the horns less valuable to poachers.
It doesn't hurt the animal, but it can harm humans who may use the contaminated horns for medicine.
Al Jazeera's Haru Mutasa reports from Simba Mbili Game Reserve.
Source: Al Jazeera