Rhinoceros Horns May Be Shrinking, According to a Recent Study
Poachers kill last female rhino in South African park for prized horn, Endangered species
Could lab-grown rhino horns actually stop poaching? We may never know : NPR
Sumatran rhino population plunges, down to 100 animals
Can Conservationists Actually Save Rhinos by Dehorning Them?
Photos suggest rhino horns have shrunk over past century, likely due to hunting
Rhinoceros, About, Nature
Rhino horn trafficking surging out of control, say campaigners, Illegal wildlife trade
Making Headway in the Fight Against Rhino Horn Trafficking
Rhino horns are shrinking (and hunting may be to blame), Human Impact
Rhino horns have got smaller over time as poachers target big prizes
Rhino poaching and illegal trade decline but remain critical threats – new report - Press release