* Nationwide: A large and well-established company offering various pet insurance plans.
* Progressive: Known for auto insurance, they also have a substantial pet insurance arm.
* Trupanion: Specializes in pet insurance and often highlighted for its comprehensive coverage options.
* Healthy Paws Pet Insurance: Another company focusing specifically on pet insurance, known for its accident and illness coverage.
* Embrace Pet Insurance: Offers customizable plans with a variety of coverage options.
* Figo Pet Insurance: Provides accident and illness coverage as well as add-on options.
It's crucial to note that "common" is subjective and depends on your location and exposure to advertising. The best way to find out which companies offer coverage in *your* area and which best suit your needs is to use an online pet insurance comparison tool or contact individual companies directly. These comparison tools allow you to input your cat's breed, age, and location to get tailored quotes.