* CompleteMonster: Cockatrice, who [[RapeIsASpecialKindOfEvil torments Senex's hens]] (including [[TheHeart Pertelote]]), [[spoiler: kills his own father]], and tries to engineer the return of [[BigBad Wyrm]].
* JerkassWoobie: While he gets a little too excited about his son, it's hard not to feel sorry for Senex when [[spoiler: he is killed by Cockatrice]].
** [[spoiler: Chauntecleer himself]] in the sequel, once he realizes how delusional his plan to [[spoiler: raise Mundo Cani]] was at the end of his life and the extent of the consequences.
* MoralEventHorizon: [[TheDragon Cockatrice]] crosses it as soon as he grows up by [[spoiler: murdering Senex rather callously and shoving the body aside.]]
* {{Squick}}: A basilisk gets into the Coop and [[spoiler: kills the Wee Widow Mouse]] by hiding ''inside the body'' of a Wild Turkey it killed.
* TearJerker / CrowningMomentOfFunny: The last scene of the book, where Chauntecleer and John Wesley Weasel argue about who's going to [[spoiler: join Mundo Cani under the Earth in fighting Wyrm]] somehow manages to be both simultaneously.
* TheWoobie: Mundo Cani. That is, until his CrowningMomentOfAwesome.
** The Bird With No Tongue and Ferric Coyote in the sequel.
* {{Wangst}}: What Mundo Cani does for most of the book, often about his GagNose. [[CatchPhrase ''MAROONED!'']]
** However, it is implied that at least part of his {{Wangst}} comes from [[spoiler: knowing about his HeroicSacrifice.]]