Not sure where you're getting the Mittelwest lifetime health guarantee from. I have a 4 yo Mittelwest dog with severe bilateral hip dysplasia, x-rays rated by the SV in Germany at 12 months and on file. I was a valued Mittelwest team member for years, and received nothing as far as a guarantee. If anyone wants to know more, including info about his temperament as well as the kennel, please feel free to pm me.
RATCHX2 SG Wisp von Schneiden Fels BH NW1 RA OAP OAJ SWN CZ8B CAA CGCA TKN TC HIC
SG Chase vom Mittelwest II BH
SG Flame von Nummer-Eins CA TKN HIC