There is another reason why you may not be able to see the animals.

VOA: special.2010.01.04

Previously humans were to be vegetarian: Genesis 1, the portrait was one in which humans and animals did not compete for food, or consume one another.

在《创世纪》1中，早期的人类是素食主义者，描绘了一幅人类和动物,不用争夺食物，不用互相残杀的景象。

耶鲁公开课 - 旧约导论课程节选

Animals that are altruistic even to the point of dying to help another, those genes will, under some circumstances, be preserved over the genes of people who are less caring.

有强烈利它主义的动物,甚至为其他动物牺牲自己，这些基因在某些情况下，就会被保存下来,而那些不关心他人的基因则不会。

耶鲁公开课 - 心理学导论课程节选