【200分汉译英】破解“摸狗一下，它必抖落”之迷

不知道大家都有养狗的经历没有，应该知道这句话吧：“摸狗一下，它必抖落”。
I don't know if you have the experience of raising a dog,if you have,you must know these words,"a dog should shake,if it is touched".
这个是狗本身比较特殊的东西，偶尔我用手去抚摩爱狗毛毛之后，它也要做这样的动作，非再抖动下身上下，我经过多次这样，觉得这个问题很有趣味。
This is a special phenomenon of a dog,I will touch my Maomao occasionally,and it will do shch an act,and shake to a certainty.I have found this phenomenon for several times,and feel very funny.
有两点原因，一是它认为我们人的手比较脏，不干净，从本质上说，它喜欢被人去摸摸它，因为它喜欢撒娇。但它又顾及人的手是否很脏呢，所以当人摸完后，它都要去在甩下自己的身子，把皮毛上的脏的东西弄下去。
I think there are two reasons,first,it thinks human beings' hands are dirty,and not clean.It likes being touched in nature,because it likes showing off its delicacy,but it is afraid that human beings' hands are dirty,so afer it is touched,it will shake its body to shake off those dirt on its fur.
第二个原因也很特别，它觉得自己的毛被弄乱了，因为人通常抚摩狗的毛是按顺毛摸的，但狗并不这样认为，它就认为毛被弄乱了，才再次抖下，使自己的毛顺留过来。
The second reason is very specia