Lulu Is a Rhinoceros metaphorically portrays LGBTQ+ themes through Lulu's journey of self-acceptance as a rhinoceros. The film affirms the worth of self-identity, depicting challenges from external pressures while emphasizing resilience, self-love, and courage. It promotes kindness, empathy, and community support, offering an uplifting narrative about embracing one's true self.

Lulu Is a Rhinoceros uses an animal metaphor to affirm transgender identity and self-acceptance. It explores the disconnect between internal and external identity, emphasizing self-definition and authenticity. The film promotes kindness, diversity, and acceptance, framing these as universal values without portraying transgender identity as problematic.