Only line breeding can offer this possibility. Consider, too, there is often as much difference between litter mates in ability, temperament, and tractability as one might find between separate litters within a breed. 2. buys pups from breeders who specialize in producing the type retriever they desire. Select litters with strong mother lines. Dams should be trained hunting dogs and she should possess the qualities you desire in your dog, not just in the sire.
Dams project more influence on the litter than the sire.
Good bitches are seldom mated to poor dogs, yet the opposite frequently occurs. A poor bitch is unlikely to produce good pups despite the virtues of the sire. Look closely for desirable traits and strength in the trailing bottom line of the pedigree That is the dam, granddam, great granddam, etc. Excellent mothers are important. Don't pick litters based solely on the number of titles in the pedigree.