Rhinos are just one of the animals that are severely threatened by poaching.
The northern subspecies of the white rhino is so rare that it is given it's own armed bodyguards in the Ol Pejeta Conservancy of Kenya. The animals have their horns surgically removed (which is shown to deter poachers and to not have a detrimental effect on the health of the animal) and then are looked after by armed guards.
You can read more and see a photo here.
There's something just so tragically sad about this.