 Since rhino horn is made of keratin, advocates say the procedure is painless for the animal.Another strategy being used to counter rhino poachers in Africa is called "RhODIS", which is a database that compiles rhino DNA from confiscated horns and other goods that were being illegally traded, as well as DNA recovered from poaching sites.RhODIS cross-references the DNA as it searches for matches; if a match is found, it is used to track down the poachers.