When I was in South Africa I heard a lot about the big problem with poaching, and especially towards the Rhinos that are under the danger of becoming extinct.
One of the nice things that we got introduced to was the Alzu Petroport that had large enclosures with animals, and that was under 24 hours of CC TV surveillance, and armed guards. All setup to protect the different animals. The image below is taken from the Alzu, and these animals at least seems safe.
As you can see from the image, The Rhinos have had there horns removed as a mean to protect them from poaching. I just hope it works. You can read more about Alzu here