题目内容
Breeding of experimental animals includes strict control of the genetics, at least with rodents.
查看答案
搜索结果不匹配？点我反馈
更多问题
Hedonism deals with feelings and mental states that matter to the animal.
For the so-called narrow hedonism, it is easy to agree on which feelings are positive and which are negative, and to which extent they count.
Animals' feelings are very difficult to measure, which make the hedonistic view hard to work with on a practical level.
Measuring an animal's preferences can be done in a strictly scientific way.
微信支付 
支付宝支付