When the last of the students trickled in, Crookshanks began pacing the desk while meowing and growling as if he was the one giving the lecture instead of Professor Berger. Wendy grew flustered; nothing she did could get the cat to leave. She finally sent a message up to the headmistress, "You need to come to my classroom to translate or to tell this cat that he still has a lot to learn how to be an assistant professor.’