The most famous case is that of elephants in South Africa. At the turn of the century there were only four, but by the 1990s there were more than 9000, of which 82 % are concentrated in the renowned Kruger National Park.
特別是在管理制度較健全的東、南非洲國家。最知名的，是南非大象由本世紀初的四隻，到九○年代已增為九千多隻，但百分之八十二都集中在生態旅遊區克魯格國家公園裡。