In light of all the benefits that people derive from animals, it is a wonder that we don't treat them better. According to wildlife experts, 40 percent of all vertebrates are on or close to the endangered species list.
有的野生動物更是人類尋找自己根源的重要證據。例如冰河時期留在台灣的台灣鱒，就被視為大陸和台灣曾經相連的證據；少了它，地質史也少了一項佐證。