Citation: http://www.straitstimes.com/breaking-news/se-asia/story/malaysia-indonesia-landmark-deal-protect-sumatran-rhino-20130404
The main reasons of extinction of animals are usually
・Decreasing forest area
・Too much hunting
But, when we consider that developing countries take it important to sell wood pulp, it will be difficult to persuade them to reduce cutting trees.
And, when hunting of a kind of endangered species is related with local customs, we are forced to choose conserving cultures or conserving natural environment.