[quote=Xamen13"][quote="jaboa]A healthy dog with a proven working track record & good type is more important than any bloodline .... [/quote] Indeed.[/quote] If the healthy dog with a proven working track record & good type come from weak bloodline , probably his is a Hybrid with Vigor and they can pass his qualities to a offspring.Unless the bitch have unrelated blood and will be another Hybrid , Tri-cross.But genetic is a field that reserves many unknowing happens.