Rats are not good things in my impression. Interestingly, in recent years, rats have been popular in movies again and again, from "Mickey Mouse", "Tom and Jerry", to "Ratatouille", "The Secret of NIMH", all of them are smart and well-behaved. Recently, their status has been promoted again - according to the introduction of the pet shop staff in Zhuangyuanfang and Qingping Market, hamsters are now one of the most popular pets!