I purchased Trupanion for my 8 year old dog because the company said that it would accept pets that have preexisting conditions but would not cover expenses related to those illnesses. The guidelines were pretty clear - any expenses related to the illness that was found before purchasing the insurance plan will not be covered. However, to my dismay, it seems that Trupanion evaluates every nitty gritty detail in order to deny your claims for any future illnesses that may incur. For example, my dog had to be rushed to the ER because he was vomiting and lethargic. As a result, he was diagnosed with Pancreatitis. Trupanion got back to me and sent me a letter that copied and pasted every comment starting from 2 years back when I informed my vet of incidents when he had indigestion and vomited. They said that those were "preexisting symptoms" that led up to my dog's illness 2 years later. Note, the vet never found any kind of stomach related illnesses until recently when I submitted the claim. Another problem I have with Trupanion is that they try to find any reason to deny your claim. For example, they approved one claim when my dog caught a cold from another dog, but when I submitted 2 more claims for the same illness, they denied them because "it was related to his preexisting condition." Seriously, I am on the fence about canceling my account with them right now. It makes no sense for me to continue purchasing Trupanion's service if they are not going to provide me any.