Tear Jerker: Mudge's emotional breakdown when he thinks Jon-Tom is going away for good. Especially the fact he for the most part seemed to hate Jon-Tom's guts throughout the first four books, and many times wouldn't think twice about just abandoning him.
A large furry mass struck him square in the chest. He staggered backward with Mudge clinging to him. The otter was sobbing uncontrollably. "You ain't comin' back!" Black nose and whiskers were inches from his face and tears were pouring down fuzzy cheeks. "I know you ain't, once you get back to your own world through that bloody 'ole in the ground you'll be back in familiar surroundin', back among your own kind, an' you'll forget all about us. About poor ol' Mudge, an' Weegee, and that senile 'ardshell Clothahump who needs you to look after 'im in 'is old age, and even about Talea. You'll get back to where everythin's comfortable and safe an' relaxin' an' you won't be comin' back 'ere.'' He grabbed the vee of Jon-Tom's indigo shirt and shook him.