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mike rogers
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sometimes Justin they just don't pair up right. They may have a lot great traits, but when you make the cross those less desirable recessive traits pair up and you get a litter of culls and below average pups.
You can lose a lot of folks when you start talking genes and chromosomes, recessive and dominate. I always just try to make it as easy as possible to explain. You can have the best two dogs in the country, but put them two together and they cant produce a good pup between the two them. They just don't pair up right. And yet you could breed the same male to a sister of the female or vise-a-versa and everyone of'm be outstanding pups. Thats why you look further than just the pair of dogs you have. You need to look at the parents and grandparents of each dog. You build a data base of what you have and what they had and the crosses they made and the results they had. Papers give you a family history and a way to keep track of where your going. Sometimes you'll never know until you make the cross. Again best dog to best doesn't always work, but it's a good way to start and I would say 100% time the best and only way to start your breeding program, but start best to best out of the same line of family. You can control those good (early starting, cold nose, loud mouth, natural drive, and brains) and bad ( timidness, shyness, late starters, poor drive) traits that way.
Not only those less desirable traits but genes that care deafness and blindness and diseases like hip dysplasia and so on. That's why knowing whats behind your line of dogs is very important.
good luck
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