Sorry to hear about Bux! If I were you, I would let the breeder know, not as a complaint, but most breeder's would want to know these things ... I know mine would! Meantime, I would make sure that everywhere he has the habit of jumping up ... sofa, bed, chair, etc. ... that he had something there as a little booster so that it wouldn't be such a hard "landing" when he jumps back down. Hope he does well and it doesn't get any worse! Puppy kisses from Toto!