translation.en: It also turns out that thinking about mental illness in other animals Most mental disorders in the United States are fear and anxiety disorders, and when you think about it, fear and anxiety are actually really extremely helpful animal emotions.
translation.zh: 同时更没有费心思索过 其他动物的精神疾病。 大多数美国人的精神障碍是 恐惧和焦躁性障碍， 但仔细想一想， 这两者实际上是极其有益的动物情绪。