Let's change our attitude or they'll end up in a museum: Rhinos have a history on the earth of 40 million years, yet the number of species today has dropped from more than 300 to only five, while the total population has declined from countless numbers the last century to fewer than 10,000.
許多動物，如貓熊，人們費盡心機為之配對，卻難有成果。犀牛也是一例。調整態度或成為館藏犀牛出現地球四千萬年的歷史中，種類已由三百多種，衰減到今天只剩五種，總數也由上個世紀的難以計數，降到一萬頭以下。