Why Does Everyone Hate Rats? (Update)

This updated episode of Freakonomics Radio revisits the enduring cultural hatred of rats, exploring why these urban-dwelling rodents are so reviled despite their ecological role and surprising intelligence. Host Stephen Dubner examines New York City’s aggressive rat mitigation efforts, spotlighting former rat czar Kathy Karate and the controversial 'wholesale slaughter' job posting by former mayor Eric Adams. The episode challenges the long-held belief that rats were the primary carriers of the Black Death, citing scientific research suggesting human parasites like fleas and lice were more likely vectors. Experts including biologist Bethany Brookshire and economist Ed Glazer argue that our fear of rats reflects deeper human anxieties about urban life, failure, and our own environmental impact. Cultural perspectives vary widely—while rats are sacred in India’s Karni Mata Temple, they’re vilified in Western cities. The episode ultimately calls for a shift in mindset: rather than viewing rats as pests, we should see them as cohabitants in our cities, deserving of empathy and pragmatic management rather than outright eradication. The narrative underscores how blaming animals for human problems often reveals more about us than about them. Key takeaways include: rats are not the primary disease vectors they’re made out to be, especially in the Black Death; their reputation is shaped more by cultural bias than biological threat; urban design and sanitation are far more critical than extermination; and empathy for coexisting species can lead to better urban planning. The episode concludes with a call to reframe our relationship with rats—not as enemies, but as partners in the complex ecosystem of city life.