hat their time might better be employed in other ways, as the skill is of limited practical use unless one has a great need of disguise or concealment
简单翻译：练习成为阿尼马格斯的过程又费时又费力、还有反噬的危险，许多巫师单纯地只是觉得他们的时间可以花在其他的事情上，因为阿尼马格斯这个技艺实用性非常受限，除非你十分需要伪装和隐藏。
同样来自hp wiki：
albus dumbledore made a note within the tales of beedle the bard to expin for minerva mcgonagall that, while animagi are usually people who seek to avoid punishment when they broke the w, she merely became one to further her stud