在相同环境下，性格会主导分化结果。
狼注定要吃羊的。有人曾把一只幼狼和一只羊羔放在一起养，起初他们在一起吃、一起睡、一起玩耍，真是“两小无猜”。但随着他们渐渐的长大，狼就会自觉不自觉地把羊从朋友的概念里去掉，进而逐渐把羊列为自己可以侵害和支配的对象。

有相同的性格时，环境会主导分化结果。
尽管都是狼，但野生环境中的狼与动物园里人工饲养的狼却因所处环境的差异有很大的区别。

浅薄之见，权当新年之际博诸君一笑耳！

最后，祝方先生及诸位：

新年快乐，万事如意！

还有：
１．这回不是美女，而是漂亮的老虎脸。
２．这回对象不是１－７日的幼儿，而是３－４月大的婴儿。
３．为了证明对脸的喜好是不是只针对人脸，结果是别的动物的脸也有喜好。

下面是摘要：
Human infants, just a few days of age, are known to prefer attractive human faces. We examined whether this preference is human-specific. Three- to 4-month-olds preferred attractive over unattractive domestic and wild cat (tiger) faces (Experiments 1 and 3). The preference was not observed when the faces were inverted, suggesting that it did not arise from low-level image differences (Experiments 2 and 3). In addition, the spontaneous preference for attractive tiger faces influenced performance in a recognition memory task involving attractive versus unattractive tiger face pairings (Experiment 4). The findings suggest that infant preference for attractive faces reflects the activity of general processing mechanisms rather than a specific adaptation to mate choice.

我现在正在努力找他的论文来证明或推翻他的实验。我找到了他的论文了。但是不是免费的囧。。。

http://www.blackwell-synergy.com/doi/abs/10.1111/j.1467-7687.2007.00647.x