No, Interceptor Plus is specifically formulated for use in dogs only and should not be given to cats. The active ingredient in Interceptor Plus, milbemycin oxime, is safe and effective in dogs but can be harmful to cats. Milbemycin oxime works by targeting the nervous system of parasites and preventing their reproduction, and cats have a different nervous system than dogs. This means that if a cat is given Interceptor Plus, it can cause serious adverse effects, such as tremors, seizures, or even death.