Breeding cold dogs does in fact turn out more cold dogs. Cur dogs is different as what is identified as a cur is very subjective. it's so hard to diagnose why a dog actually stopped, most do not want to deal with the thinking part of it or the scrutiny that may come with it. Plenty of deep game dogs hang it up on the behalf of their owners fuck ups and then said owner is amazed to find out that the pups off that cur were deep game in another man's hands. Huge grey area there. Cold dogs... not so much. I've bred a cold bitch, she was also off a cold bitch... not hard to guess what those pups were like even when the sire is clean of cold dogs for at least 6 gen. You can probably guess what lines she is down from as well... because they are known to throw cold bitches and them cold bitches have also thrown some bad SOB's. But this ties sort of into my other post on working your dogs for dock diving, bite work, etc. you will always reap what you sow! The environment has a profound impact on the dogs. Genes constantly firing on and off, expression and dormancy. It is really not a coincidence that so many cold bitches come from the Hollingsworth tree, because he didn't look at his females. they will produce nice dogs, they have a shit ton of nice dogs stacked in with those cold bitches. But follow the genealogy and know that the little decisions you make can have great impact down the road. Even the slightest environmental change can have great impact if it continues for generations.