Killing Animals is a portrait of a lost generation of California youths. The lives of troubled teenage misfits intertwine as they experiment with vices of all kinds, and succumb to self-destructive, often heartless nihilism.
| Actor | Role |
|---|---|
 James FrancoMr. Hurston | Mr. Hurston |
 Zachary GordonJeremy | Jeremy |
 Sigi RavetVicky | Vicky |
 Cody ChristianRoberto | Roberto |
 Lily GibsonNot listed | Not listed |
 McCaul LombardiNot listed | Not listed |
 Michelle Farrah HuangPam | Pam |
 Maggie PartoMom | Mom |
 Louis HunterRyan | Ryan |
 Bo MitchellNot listed | Not listed |
 Timothy GranaderosNick Dobbs | Nick Dobbs |
 Jacob LoebNot listed | Not listed |
| JJay DisneyJan | Jan |
 Matthew BoehmIvan | Ivan |
| AAustin ChandraNot listed | Not listed |
 Michael NeumeyerNot listed | Not listed |