My experience was not unlike the stories one hears about people trying to get insurance companies to pay out on human health insurance claims. I ended up wasting time with appeals and feeling utterly cheated and frustrated. The argument they made was that, because two illnesses share certain symptoms, the 2nd illness was simply a "pre-existing" condition from the day the first one manifested itself. While this is difficult to prove or disprove, it disappointed me that they were unreceptive to my vet's professional opinion that they were separate diagnoses. All in all, I felt that I simply handed the insurance company money and got nothing but aggravation when I needed them. I didn't get a dime back from them for either of the illnesses. Profits over pets, I assume.
Age of Pet