This educational video explores the biological and psychological mechanisms behind anger, helping children understand why they feel mad and how their bodies react. Host Jessi and her robot mouse friend Squeaks begin by identifying facial expressions associated with different emotions, transitioning into a detailed explanation of the physiological "fight" response. The video explains that anger is actually the brain's way of preparing the body to face a perceived threat, triggering reactions like rapid breathing, muscle tension, and the release of adrenaline. The content breaks down complex biological concepts—such as the fight-or-flight response and adrenaline release—into kid-friendly terms, using clear animations and examples. It compares human reactions to animal behaviors, noting how dogs growl or cats arch their backs for similar reasons. The narrative emphasizes that while this response was useful for survival against physical threats, it often activates today during non-dangerous situations, like losing a game or being told "no." Ideally suited for Social-Emotional Learning (SEL) and elementary science curriculums, this resource provides practical strategies for emotional regulation. The video concludes by teaching students specific techniques to manage their anger, such as deep breathing, counting to ten, and ensuring they are well-rested and fed. It serves as an excellent tool for normalizing difficult emotions while empowering students with the science behind their feelings and the tools to control them.