Joan Jett's "Bad Reputation" sets the tone for the villains of the animal kingdom. Sharks, alligators and wolves are creatures we love to hate, but they play crucial roles in their native ecosystems.
By entering your email address, you agree to our Terms of Use and acknowledge the Privacy Policy. discovery and its affiliates may use your email address to provide updates, ads, and offers.
To withdraw your consent or learn more about your rights, see the Privacy Policy.