I used Pet Plan for Quincy and it did not have hereditary limitations. However, boxers were considered a select breed (i.e. more problem prone) so I paid a higher premium. Also, every 6 mos they review your policy. If you have put in claims, they raise your premium and/or decrease the amount percentage they pay back (for example, initially Quincy was getting 80% back after the annual deductable was paid; in the end, he was getting only 50% covered). They also raise the rates every year. In the end, it was costing me almost $100/month. They will cover boxers for their entire life and, with certain of their plans, if the dog dies before 7, they reimburse up to $700 or the original purchase price if you have a receipt. Pet Plan is underwritten by the same people as the new Purina insurance plan. I checked out their website and the plans appear to be the same, the underwriter is the same yet Purina was quite a bit cheaper. They might be good to further explore.