据《政治教育》1994年第3期刊载:华东师大生物系几位教师对黄鼠狼进行了长达20年的调查研究。先后解剖了近2000只黄鼠狼,仅发现两只吃了鸡。又做了这样的实验:第一天,在关着黄鼠狼的笼子里放进活鸡三只,带鱼一段,黄鼠狼只吃了带鱼,没有吃鸡;第二天,放进老鼠、鸽子和鸡,黄鼠狼只吃了老鼠;直到第五天,仅仅放进鸡,黄鼠狼没 According to “Political Education” in the third issue of 1994: Several teachers of the Department of Biology of East China Normal University conducted a 20-year investigation of the weasel. Nearly 2,000 weasels were dissected one after another and only two chickens were found. Another experiment was done: On the first day, three live chickens were brought into the cage with weasel in it, and some fish were taken. The weasel only ate octopus and did not eat chicken; the next day, they put rats, pigeons, and chickens. The weasel only ate the mouse; it wasn’t until the fifth day that it was put into the chicken and the weasel didn’t.