I had to put him down when he was a year old.
I studied a lot before i got him, specialy about growingpains well my conclusion is when it is wrong it is wrong and you cant do anything about it.
Everybody wants them bigger and bigger and the breeders want to breed bigger because of the money and so we will loose this wonderful healthy breed.
My dog had no kidney failure but growing pains and all the joints were a mess. It was very painfull to see him walking with a lot of pain.